diff --git a/Cargo.lock b/Cargo.lock
index 314bfe2..1008425 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -195,6 +195,12 @@ version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8c3c1a368f70d6cf7302d78f8f7093da241fb8e8807c05cc9e51a125895a6d5b"
 
+[[package]]
+name = "bimap"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "230c5f1ca6a325a32553f8640d31ac9b49f2411e901e427570154868b46da4f7"
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -1649,6 +1655,7 @@ version = "0.1.0"
 dependencies = [
  "axum",
  "backoff",
+ "bimap",
  "clickhouse",
  "dotenv",
  "futures-util",
diff --git a/Cargo.toml b/Cargo.toml
index d75b292..e439373 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -52,3 +52,4 @@ backoff = { version = "0.4.0", features = [
 regex = "1.10.3"
 html-escape = "0.2.13"
 rust-bert = "0.22.0"
+bimap = "0.6.3"
diff --git a/src/config.rs b/src/config.rs
index 8a03e63..a19c4ac 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -11,12 +11,8 @@ use rust_bert::{
     },
     resources::LocalResource,
 };
-use std::{
-    env,
-    num::NonZeroU32,
-    path::PathBuf,
-    sync::{Arc, Mutex},
-};
+use std::{env, num::NonZeroU32, path::PathBuf, sync::Arc};
+use tokio::sync::Mutex;
 
 pub const ALPACA_ASSET_API_URL: &str = "https://api.alpaca.markets/v2/assets";
 pub const ALPACA_CLOCK_API_URL: &str = "https://api.alpaca.markets/v2/clock";
diff --git a/src/database/assets.rs b/src/database/assets.rs
index e5b908e..38d052c 100644
--- a/src/database/assets.rs
+++ b/src/database/assets.rs
@@ -15,8 +15,7 @@ where
     T: AsRef<str> + Serialize + Send + Sync,
 {
     clickhouse_client
-        .query("SELECT ?fields FROM assets FINAL WHERE symbol = ? OR abbreviation = ?")
-        .bind(symbol)
+        .query("SELECT ?fields FROM assets FINAL WHERE symbol = ?")
         .bind(symbol)
         .fetch_optional::<Asset>()
         .await
diff --git a/src/database/backfills.rs b/src/database/backfills.rs
index 2ef38fe..0639cb4 100644
--- a/src/database/backfills.rs
+++ b/src/database/backfills.rs
@@ -1,4 +1,4 @@
-use crate::{database::assets, threads::data::ThreadType, types::Backfill};
+use crate::{threads::data::ThreadType, types::Backfill};
 use clickhouse::Client;
 use serde::Serialize;
 use tokio::join;
@@ -58,23 +58,9 @@ pub async fn delete_where_symbols<T>(
 }
 
 pub async fn cleanup(clickhouse_client: &Client) {
-    let assets = assets::select(clickhouse_client).await;
-
-    let bars_symbols = assets
-        .clone()
-        .into_iter()
-        .map(|asset| asset.symbol)
-        .collect::<Vec<_>>();
-
-    let news_symbols = assets
-        .into_iter()
-        .map(|asset| asset.abbreviation)
-        .collect::<Vec<_>>();
-
     let delete_bars_future = async {
         clickhouse_client
-            .query("DELETE FROM backfills_bars WHERE symbol NOT IN ?")
-            .bind(bars_symbols)
+            .query("DELETE FROM backfills_bars WHERE symbol NOT IN (SELECT symbol FROM assets)")
             .execute()
             .await
             .unwrap();
@@ -82,8 +68,7 @@ pub async fn cleanup(clickhouse_client: &Client) {
 
     let delete_news_future = async {
         clickhouse_client
-            .query("DELETE FROM backfills_news WHERE symbol NOT IN ?")
-            .bind(news_symbols)
+            .query("DELETE FROM backfills_news WHERE symbol NOT IN (SELECT symbol FROM assets)")
             .execute()
             .await
             .unwrap();
diff --git a/src/database/bars.rs b/src/database/bars.rs
index 7f739da..137f58e 100644
--- a/src/database/bars.rs
+++ b/src/database/bars.rs
@@ -1,4 +1,3 @@
-use super::assets;
 use crate::types::Bar;
 use clickhouse::Client;
 use serde::Serialize;
@@ -34,16 +33,8 @@ where
 }
 
 pub async fn cleanup(clickhouse_client: &Client) {
-    let assets = assets::select(clickhouse_client).await;
-
-    let symbols = assets
-        .into_iter()
-        .map(|asset| asset.symbol)
-        .collect::<Vec<_>>();
-
     clickhouse_client
-        .query("DELETE FROM bars WHERE symbol NOT IN ?")
-        .bind(symbols)
+        .query("DELETE FROM bars WHERE symbol NOT IN (SELECT symbol FROM assets)")
         .execute()
         .await
         .unwrap();
diff --git a/src/database/news.rs b/src/database/news.rs
index 6b0903b..c89164b 100644
--- a/src/database/news.rs
+++ b/src/database/news.rs
@@ -1,4 +1,3 @@
-use super::assets;
 use crate::types::News;
 use clickhouse::Client;
 use serde::Serialize;
@@ -25,31 +24,19 @@ pub async fn delete_where_symbols<T>(clickhouse_client: &Client, symbols: &[T])
 where
     T: AsRef<str> + Serialize + Send + Sync,
 {
-    let remaining_symbols = assets::select(clickhouse_client)
-        .await
-        .into_iter()
-        .map(|asset| asset.abbreviation)
-        .collect::<Vec<_>>();
-
     clickhouse_client
-        .query("DELETE FROM news WHERE hasAny(symbols, ?) AND NOT hasAny(symbols, ?)")
+        .query("DELETE FROM news WHERE hasAny(symbols, ?) AND NOT hasAny(symbols, (SELECT groupArray(symbol) FROM assets))")
         .bind(symbols)
-        .bind(remaining_symbols)
         .execute()
         .await
         .unwrap();
 }
 
 pub async fn cleanup(clickhouse_client: &Client) {
-    let remaining_symbols = assets::select(clickhouse_client)
-        .await
-        .into_iter()
-        .map(|asset| asset.abbreviation)
-        .collect::<Vec<_>>();
-
     clickhouse_client
-        .query("DELETE FROM news WHERE NOT hasAny(symbols, ?)")
-        .bind(remaining_symbols)
+        .query(
+            "DELETE FROM news WHERE NOT hasAny(symbols, (SELECT groupArray(symbol) FROM assets))",
+        )
         .execute()
         .await
         .unwrap();
diff --git a/src/threads/data/asset_status.rs b/src/threads/data/asset_status.rs
index be79a4a..b93360a 100644
--- a/src/threads/data/asset_status.rs
+++ b/src/threads/data/asset_status.rs
@@ -78,20 +78,20 @@ async fn handle_asset_status_message(
         .assets
         .clone()
         .into_iter()
-        .map(|asset| match thread_type {
-            ThreadType::Bars(_) => asset.symbol,
-            ThreadType::News => asset.abbreviation,
-        })
+        .map(|asset| asset.symbol)
         .collect::<Vec<_>>();
 
     match message.action {
         Action::Add => {
             let mut guard = guard.write().await;
 
-            guard.symbols.extend(symbols.clone());
-            guard
-                .pending_subscriptions
-                .extend(symbols.clone().into_iter().zip(message.assets.clone()));
+            guard.assets.extend(
+                message
+                    .assets
+                    .iter()
+                    .map(|asset| (asset.clone(), asset.symbol.clone())),
+            );
+            guard.pending_subscriptions.extend(message.assets.clone());
 
             info!("{:?} - Added {:?}.", thread_type, symbols);
 
@@ -108,7 +108,7 @@ async fn handle_asset_status_message(
                     .await
                     .send(tungstenite::Message::Text(
                         to_string(&websocket::outgoing::Message::Subscribe(
-                            websocket_market_message_factory(thread_type, symbols),
+                            create_websocket_market_message(thread_type, symbols),
                         ))
                         .unwrap(),
                     ))
@@ -121,10 +121,10 @@ async fn handle_asset_status_message(
         Action::Remove => {
             let mut guard = guard.write().await;
 
-            guard.symbols.retain(|symbol| !symbols.contains(symbol));
             guard
-                .pending_unsubscriptions
-                .extend(symbols.clone().into_iter().zip(message.assets.clone()));
+                .assets
+                .retain(|asset, _| !message.assets.contains(asset));
+            guard.pending_unsubscriptions.extend(message.assets);
 
             info!("{:?} - Removed {:?}.", thread_type, symbols);
 
@@ -140,7 +140,7 @@ async fn handle_asset_status_message(
                     .await
                     .send(tungstenite::Message::Text(
                         to_string(&websocket::outgoing::Message::Unsubscribe(
-                            websocket_market_message_factory(thread_type, symbols),
+                            create_websocket_market_message(thread_type, symbols),
                         ))
                         .unwrap(),
                     ))
@@ -155,7 +155,7 @@ async fn handle_asset_status_message(
     message.response.send(()).unwrap();
 }
 
-fn websocket_market_message_factory(
+fn create_websocket_market_message(
     thread_type: ThreadType,
     symbols: Vec<String>,
 ) -> websocket::outgoing::subscribe::Message {
diff --git a/src/threads/data/backfill.rs b/src/threads/data/backfill.rs
index a6cda38..d02ceac 100644
--- a/src/threads/data/backfill.rs
+++ b/src/threads/data/backfill.rs
@@ -10,13 +10,14 @@ use crate::{
     utils::{duration_until, last_minute, FIFTEEN_MINUTES, ONE_MINUTE},
 };
 use backoff::{future::retry, ExponentialBackoff};
+use futures_util::future::join_all;
 use log::{error, info, warn};
 use std::{collections::HashMap, sync::Arc};
 use time::OffsetDateTime;
 use tokio::{
     join, spawn,
     sync::{mpsc, oneshot, Mutex, RwLock},
-    task::{spawn_blocking, JoinHandle},
+    task::JoinHandle,
     time::sleep,
 };
 
@@ -87,16 +88,18 @@ async fn handle_backfill_message(
     let mut backfill_jobs = backfill_jobs.lock().await;
 
     let symbols = match message.assets {
-        Subset::All => guard.symbols.clone().into_iter().collect::<Vec<_>>(),
+        Subset::All => guard
+            .assets
+            .clone()
+            .into_iter()
+            .map(|(_, symbol)| symbol)
+            .collect(),
         Subset::Some(assets) => assets
             .into_iter()
-            .map(|asset| match thread_type {
-                ThreadType::Bars(_) => asset.symbol,
-                ThreadType::News => asset.abbreviation,
-            })
+            .map(|asset| asset.symbol)
             .filter(|symbol| match message.action {
-                Action::Backfill => guard.symbols.contains(symbol),
-                Action::Purge => !guard.symbols.contains(symbol),
+                Action::Backfill => guard.assets.contains_right(symbol),
+                Action::Purge => !guard.assets.contains_right(symbol),
             })
             .collect::<Vec<_>>(),
     };
@@ -365,33 +368,30 @@ async fn execute_backfill_news(
         return;
     }
 
-    let app_config_clone = app_config.clone();
     let inputs = news
         .iter()
         .map(|news| format!("{}\n\n{}", news.headline, news.content))
         .collect::<Vec<_>>();
 
-    let predictions: Vec<Prediction> = spawn_blocking(move || {
-        inputs
-            .chunks(app_config_clone.max_bert_inputs)
-            .flat_map(|inputs| {
-                app_config_clone
-                    .sequence_classifier
-                    .lock()
-                    .unwrap()
-                    .predict(inputs.iter().map(String::as_str).collect::<Vec<_>>())
-                    .into_iter()
-                    .map(|label| Prediction::try_from(label).unwrap())
-                    .collect::<Vec<_>>()
-            })
-            .collect()
-    })
+    let predictions = join_all(inputs.chunks(app_config.max_bert_inputs).map(|inputs| {
+        let sequence_classifier = app_config.sequence_classifier.clone();
+        async move {
+            sequence_classifier
+                .lock()
+                .await
+                .predict(inputs.iter().map(String::as_str).collect::<Vec<_>>())
+                .into_iter()
+                .map(|label| Prediction::try_from(label).unwrap())
+                .collect::<Vec<_>>()
+        }
+    }))
     .await
-    .unwrap();
+    .into_iter()
+    .flatten();
 
     let news = news
         .into_iter()
-        .zip(predictions.into_iter())
+        .zip(predictions)
         .map(|(news, prediction)| News {
             sentiment: prediction.sentiment,
             confidence: prediction.confidence,
diff --git a/src/threads/data/mod.rs b/src/threads/data/mod.rs
index 8cd8e6d..cf37c1f 100644
--- a/src/threads/data/mod.rs
+++ b/src/threads/data/mod.rs
@@ -2,31 +2,22 @@ pub mod asset_status;
 pub mod backfill;
 pub mod websocket;
 
-use super::clock;
+use super::{clock, guard::Guard};
 use crate::{
     config::{
         Config, ALPACA_CRYPTO_WEBSOCKET_URL, ALPACA_NEWS_WEBSOCKET_URL, ALPACA_STOCK_WEBSOCKET_URL,
     },
-    types::{Asset, Class, Subset},
+    types::{Class, Subset},
     utils::authenticate,
 };
 use futures_util::StreamExt;
-use std::{
-    collections::{HashMap, HashSet},
-    sync::Arc,
-};
+use std::sync::Arc;
 use tokio::{
     join, select, spawn,
     sync::{mpsc, Mutex, RwLock},
 };
 use tokio_tungstenite::connect_async;
 
-pub struct Guard {
-    pub symbols: HashSet<String>,
-    pub pending_subscriptions: HashMap<String, Asset>,
-    pub pending_unsubscriptions: HashMap<String, Asset>,
-}
-
 #[derive(Clone, Copy, Debug)]
 pub enum ThreadType {
     Bars(Class),
@@ -76,11 +67,7 @@ async fn init_thread(
     mpsc::Sender<asset_status::Message>,
     mpsc::Sender<backfill::Message>,
 ) {
-    let guard = Arc::new(RwLock::new(Guard {
-        symbols: HashSet::new(),
-        pending_subscriptions: HashMap::new(),
-        pending_unsubscriptions: HashMap::new(),
-    }));
+    let guard = Arc::new(RwLock::new(Guard::new()));
 
     let websocket_url = match thread_type {
         ThreadType::Bars(Class::UsEquity) => format!(
diff --git a/src/threads/data/websocket.rs b/src/threads/data/websocket.rs
index 4a72c0e..806ce64 100644
--- a/src/threads/data/websocket.rs
+++ b/src/threads/data/websocket.rs
@@ -3,6 +3,7 @@ use crate::{
     config::Config,
     database,
     types::{alpaca::websocket, news::Prediction, Bar, News, Subset},
+    utils::add_slash_to_pair,
 };
 use futures_util::{
     stream::{SplitSink, SplitStream},
@@ -10,16 +11,12 @@ use futures_util::{
 };
 use log::{error, info, warn};
 use serde_json::from_str;
-use std::{
-    collections::{HashMap, HashSet},
-    sync::Arc,
-};
+use std::{collections::HashSet, sync::Arc};
 use tokio::{
     join,
     net::TcpStream,
     spawn,
     sync::{mpsc, Mutex, RwLock},
-    task::spawn_blocking,
 };
 use tokio_tungstenite::{tungstenite, MaybeTlsStream, WebSocketStream};
 
@@ -106,20 +103,24 @@ async fn handle_parsed_websocket_message(
         websocket::incoming::Message::Subscription(message) => {
             let symbols = match message {
                 websocket::incoming::subscription::Message::Market(message) => message.bars,
-                websocket::incoming::subscription::Message::News(message) => message.news,
+                websocket::incoming::subscription::Message::News(message) => message
+                    .news
+                    .into_iter()
+                    .map(|symbol| add_slash_to_pair(&symbol))
+                    .collect(),
             };
 
             let mut guard = guard.write().await;
 
             let newly_subscribed = guard
                 .pending_subscriptions
-                .extract_if(|symbol, _| symbols.contains(symbol))
-                .collect::<HashMap<_, _>>();
+                .extract_if(|asset| symbols.contains(&asset.symbol))
+                .collect::<HashSet<_>>();
 
             let newly_unsubscribed = guard
                 .pending_unsubscriptions
-                .extract_if(|symbol, _| !symbols.contains(symbol))
-                .collect::<HashMap<_, _>>();
+                .extract_if(|asset| !symbols.contains(&asset.symbol))
+                .collect::<HashSet<_>>();
 
             drop(guard);
 
@@ -128,12 +129,15 @@ async fn handle_parsed_websocket_message(
                     info!(
                         "{:?} - Subscribed to {:?}.",
                         thread_type,
-                        newly_subscribed.keys().collect::<Vec<_>>()
+                        newly_subscribed
+                            .iter()
+                            .map(|asset| asset.symbol.clone())
+                            .collect::<Vec<_>>()
                     );
 
                     let (backfill_message, backfill_receiver) = backfill::Message::new(
                         backfill::Action::Backfill,
-                        Subset::Some(newly_subscribed.into_values().collect::<Vec<_>>()),
+                        Subset::Some(newly_subscribed.into_iter().collect::<Vec<_>>()),
                     );
 
                     backfill_sender.send(backfill_message).await.unwrap();
@@ -146,12 +150,15 @@ async fn handle_parsed_websocket_message(
                     info!(
                         "{:?} - Unsubscribed from {:?}.",
                         thread_type,
-                        newly_unsubscribed.keys().collect::<Vec<_>>()
+                        newly_unsubscribed
+                            .iter()
+                            .map(|asset| asset.symbol.clone())
+                            .collect::<Vec<_>>()
                     );
 
                     let (purge_message, purge_receiver) = backfill::Message::new(
                         backfill::Action::Purge,
-                        Subset::Some(newly_unsubscribed.into_values().collect::<Vec<_>>()),
+                        Subset::Some(newly_unsubscribed.into_iter().collect::<Vec<_>>()),
                     );
 
                     backfill_sender.send(purge_message).await.unwrap();
@@ -166,7 +173,7 @@ async fn handle_parsed_websocket_message(
             let bar = Bar::from(message);
 
             let guard = guard.read().await;
-            if guard.symbols.get(&bar.symbol).is_none() {
+            if !guard.assets.contains_right(&bar.symbol) {
                 warn!(
                     "{:?} - Race condition: received bar for unsubscribed symbol: {:?}.",
                     thread_type, bar.symbol
@@ -182,10 +189,13 @@ async fn handle_parsed_websocket_message(
         }
         websocket::incoming::Message::News(message) => {
             let news = News::from(message);
-            let symbols = news.symbols.clone().into_iter().collect::<HashSet<_>>();
 
             let guard = guard.read().await;
-            if !guard.symbols.iter().any(|symbol| symbols.contains(symbol)) {
+            if !news
+                .symbols
+                .iter()
+                .any(|symbol| guard.assets.contains_right(symbol))
+            {
                 warn!(
                     "{:?} - Race condition: received news for unsubscribed symbols: {:?}.",
                     thread_type, news.symbols
@@ -198,21 +208,16 @@ async fn handle_parsed_websocket_message(
                 thread_type, news.symbols, news.time_created
             );
 
-            let app_config_clone = app_config.clone();
             let input = format!("{}\n\n{}", news.headline, news.content);
 
-            let prediction = spawn_blocking(move || {
-                app_config_clone
-                    .sequence_classifier
-                    .lock()
-                    .unwrap()
-                    .predict(vec![input.as_str()])
-                    .into_iter()
-                    .map(|label| Prediction::try_from(label).unwrap())
-                    .collect::<Vec<_>>()[0]
-            })
-            .await
-            .unwrap();
+            let prediction = app_config
+                .sequence_classifier
+                .lock()
+                .await
+                .predict(vec![input.as_str()])
+                .into_iter()
+                .map(|label| Prediction::try_from(label).unwrap())
+                .collect::<Vec<_>>()[0];
 
             let news = News {
                 sentiment: prediction.sentiment,
diff --git a/src/threads/guard.rs b/src/threads/guard.rs
new file mode 100644
index 0000000..6e67641
--- /dev/null
+++ b/src/threads/guard.rs
@@ -0,0 +1,19 @@
+use crate::types::Asset;
+use bimap::BiMap;
+use std::collections::HashSet;
+
+pub struct Guard {
+    pub assets: BiMap<Asset, String>,
+    pub pending_subscriptions: HashSet<Asset>,
+    pub pending_unsubscriptions: HashSet<Asset>,
+}
+
+impl Guard {
+    pub fn new() -> Self {
+        Self {
+            assets: BiMap::new(),
+            pending_subscriptions: HashSet::new(),
+            pending_unsubscriptions: HashSet::new(),
+        }
+    }
+}
diff --git a/src/threads/mod.rs b/src/threads/mod.rs
index 5f09b94..227caf0 100644
--- a/src/threads/mod.rs
+++ b/src/threads/mod.rs
@@ -1,2 +1,3 @@
 pub mod clock;
 pub mod data;
+pub mod guard;
diff --git a/src/types/alpaca/api/incoming/asset.rs b/src/types/alpaca/api/incoming/asset.rs
index ebc8edd..93bc193 100644
--- a/src/types/alpaca/api/incoming/asset.rs
+++ b/src/types/alpaca/api/incoming/asset.rs
@@ -43,6 +43,15 @@ pub enum Status {
     Inactive,
 }
 
+impl From<Status> for bool {
+    fn from(item: Status) -> Self {
+        match item {
+            Status::Active => true,
+            Status::Inactive => false,
+        }
+    }
+}
+
 #[allow(clippy::struct_excessive_bools)]
 #[derive(Clone, Debug, PartialEq, Deserialize)]
 pub struct Asset {
@@ -64,8 +73,7 @@ pub struct Asset {
 impl From<Asset> for types::Asset {
     fn from(item: Asset) -> Self {
         Self {
-            symbol: item.symbol.clone(),
-            abbreviation: item.symbol.replace('/', ""),
+            symbol: item.symbol,
             class: item.class.into(),
             exchange: item.exchange.into(),
             time_added: time::OffsetDateTime::now_utc(),
diff --git a/src/types/alpaca/api/incoming/news.rs b/src/types/alpaca/api/incoming/news.rs
index 67742ec..4cd32e4 100644
--- a/src/types/alpaca/api/incoming/news.rs
+++ b/src/types/alpaca/api/incoming/news.rs
@@ -1,4 +1,7 @@
-use crate::{types, utils::normalize_news_content};
+use crate::{
+    types,
+    utils::{add_slash_to_pair, normalize_news_content},
+};
 use serde::Deserialize;
 use time::OffsetDateTime;
 
@@ -41,7 +44,11 @@ impl From<News> for types::News {
             id: news.id,
             time_created: news.time_created,
             time_updated: news.time_updated,
-            symbols: news.symbols,
+            symbols: news
+                .symbols
+                .into_iter()
+                .map(|symbol| add_slash_to_pair(&symbol))
+                .collect(),
             headline: normalize_news_content(&news.headline),
             author: normalize_news_content(&news.author),
             source: normalize_news_content(&news.source),
diff --git a/src/types/alpaca/api/outgoing/news.rs b/src/types/alpaca/api/outgoing/news.rs
index 8bc64c2..5a3c2ee 100644
--- a/src/types/alpaca/api/outgoing/news.rs
+++ b/src/types/alpaca/api/outgoing/news.rs
@@ -1,4 +1,5 @@
 use super::serialize_symbols;
+use crate::utils::remove_slash_from_pair;
 use serde::Serialize;
 use time::OffsetDateTime;
 
@@ -18,7 +19,7 @@ pub struct News {
 }
 
 impl News {
-    pub const fn new(
+    pub fn new(
         symbols: Vec<String>,
         start: OffsetDateTime,
         end: OffsetDateTime,
@@ -28,7 +29,10 @@ impl News {
         page_token: Option<String>,
     ) -> Self {
         Self {
-            symbols,
+            symbols: symbols
+                .into_iter()
+                .map(|symbol| remove_slash_from_pair(&symbol))
+                .collect(),
             start,
             end,
             limit,
diff --git a/src/types/alpaca/websocket/incoming/news.rs b/src/types/alpaca/websocket/incoming/news.rs
index 682c3b5..1d3b009 100644
--- a/src/types/alpaca/websocket/incoming/news.rs
+++ b/src/types/alpaca/websocket/incoming/news.rs
@@ -1,4 +1,7 @@
-use crate::{types, utils::normalize_news_content};
+use crate::{
+    types,
+    utils::{add_slash_to_pair, normalize_news_content},
+};
 use serde::Deserialize;
 use time::OffsetDateTime;
 
@@ -26,7 +29,11 @@ impl From<Message> for types::News {
             id: news.id,
             time_created: news.time_created,
             time_updated: news.time_updated,
-            symbols: news.symbols,
+            symbols: news
+                .symbols
+                .into_iter()
+                .map(|symbol| add_slash_to_pair(&symbol))
+                .collect(),
             headline: normalize_news_content(&news.headline),
             author: normalize_news_content(&news.author),
             source: normalize_news_content(&news.source),
diff --git a/src/types/alpaca/websocket/outgoing/subscribe.rs b/src/types/alpaca/websocket/outgoing/subscribe.rs
index 311d888..465ab62 100644
--- a/src/types/alpaca/websocket/outgoing/subscribe.rs
+++ b/src/types/alpaca/websocket/outgoing/subscribe.rs
@@ -1,3 +1,4 @@
+use crate::utils::remove_slash_from_pair;
 use serde::Serialize;
 
 #[derive(Serialize)]
@@ -24,7 +25,12 @@ pub struct NewsMessage {
 
 impl NewsMessage {
     pub fn new(symbols: Vec<String>) -> Self {
-        Self { news: symbols }
+        Self {
+            news: symbols
+                .into_iter()
+                .map(|symbol| remove_slash_from_pair(&symbol))
+                .collect(),
+        }
     }
 }
 
diff --git a/src/types/asset.rs b/src/types/asset.rs
index 67bebac..7a3335c 100644
--- a/src/types/asset.rs
+++ b/src/types/asset.rs
@@ -1,6 +1,7 @@
 use clickhouse::Row;
 use serde::{Deserialize, Serialize};
 use serde_repr::{Deserialize_repr, Serialize_repr};
+use std::hash::{Hash, Hasher};
 use time::OffsetDateTime;
 
 #[derive(Clone, Copy, Debug, PartialEq, Eq, Serialize_repr, Deserialize_repr)]
@@ -26,9 +27,14 @@ pub enum Exchange {
 #[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize, Row)]
 pub struct Asset {
     pub symbol: String,
-    pub abbreviation: String,
     pub class: Class,
     pub exchange: Exchange,
     #[serde(with = "clickhouse::serde::time::datetime")]
     pub time_added: OffsetDateTime,
 }
+
+impl Hash for Asset {
+    fn hash<H: Hasher>(&self, state: &mut H) {
+        self.symbol.hash(state);
+    }
+}
diff --git a/src/utils/mod.rs b/src/utils/mod.rs
index 9d111eb..4ed449d 100644
--- a/src/utils/mod.rs
+++ b/src/utils/mod.rs
@@ -4,6 +4,6 @@ pub mod time;
 pub mod websocket;
 
 pub use cleanup::cleanup;
-pub use news::normalize_news_content;
+pub use news::{add_slash_to_pair, normalize_news_content, remove_slash_from_pair};
 pub use time::{duration_until, last_minute, FIFTEEN_MINUTES, ONE_MINUTE};
 pub use websocket::authenticate;
diff --git a/src/utils/news.rs b/src/utils/news.rs
index c5559c6..799d361 100644
--- a/src/utils/news.rs
+++ b/src/utils/news.rs
@@ -13,3 +13,16 @@ pub fn normalize_news_content(content: &str) -> String {
 
     content.to_string()
 }
+
+pub fn add_slash_to_pair(pair: &str) -> String {
+    let regex = Regex::new(r"^(.+)(BTC|USD.?)$").unwrap();
+
+    regex.captures(pair).map_or_else(
+        || pair.to_string(),
+        |caps| format!("{}/{}", &caps[1], &caps[2]),
+    )
+}
+
+pub fn remove_slash_from_pair(pair: &str) -> String {
+    pair.replace('/', "")
+}
diff --git a/support/clickhouse/docker-entrypoint-initdb.d/0000_init.sql b/support/clickhouse/docker-entrypoint-initdb.d/0000_init.sql
index ed4ff7d..c8650fe 100644
--- a/support/clickhouse/docker-entrypoint-initdb.d/0000_init.sql
+++ b/support/clickhouse/docker-entrypoint-initdb.d/0000_init.sql
@@ -1,6 +1,5 @@
 CREATE TABLE IF NOT EXISTS qrust.assets (
     symbol LowCardinality(String),
-    abbreviation LowCardinality(String),
     class Enum('us_equity' = 1, 'crypto' = 2),
     exchange Enum(
         'AMEX' = 1,
@@ -13,7 +12,6 @@ CREATE TABLE IF NOT EXISTS qrust.assets (
         'CRYPTO' = 8
     ),
     time_added DateTime DEFAULT now(),
-    CONSTRAINT abbreviation ASSUME replace(symbol, '/', '') = abbreviation
 )
 ENGINE = ReplacingMergeTree()
 PRIMARY KEY symbol;