diff --git a/scripts/surfer/crypto_funding_paper.py b/scripts/surfer/crypto_funding_paper.py
index 399bd93d4..ab7c2623e 100644
--- a/scripts/surfer/crypto_funding_paper.py
+++ b/scripts/surfer/crypto_funding_paper.py
@@ -43,11 +43,19 @@ def get(url, tries=4):
             time.sleep(2 * (a + 1))
 
 
+def crypto_native():
+    """Symbols whose underlying is a crypto COIN (excludes EQUITY/KR_EQUITY/COMMODITY/INDEX/
+    PREMARKET tokenized-stock perps) — matches the universe the edge was validated on."""
+    info = get(f"{FAPI}/fapi/v1/exchangeInfo")
+    return {s["symbol"] for s in info["symbols"] if s.get("underlyingType") == "COIN"}
+
+
 def universe():
-    """Liquid USDT perps: symbol -> 24h quote volume (USD)."""
+    """Liquid CRYPTO-NATIVE USDT perps: symbol -> 24h quote volume (USD)."""
+    native = crypto_native()
     t = get(f"{FAPI}/fapi/v1/ticker/24hr")
     return {x["symbol"]: float(x["quoteVolume"]) for x in t
-            if x["symbol"].endswith("USDT") and float(x["quoteVolume"]) > LIQ_USD}
+            if x["symbol"].endswith("USDT") and x["symbol"] in native and float(x["quoteVolume"]) > LIQ_USD}
 
 
 def funding_hist(sym, limit=90):