Migrate insiders and filings from FMP to yfinance

FMP v3 insider-trading and sec_filings endpoints are legacy-gated.
Switch to yfinance (t.insider_transactions, t.sec_filings) which
provides the same data for free with no API key required.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/services/data_service.py b/services/data_service.py
index 0399c58..5ac8573 100644
--- a/services/data_service.py
+++ b/services/data_service.py
@@ -146,6 +146,32 @@ def get_next_earnings_date(ticker: str) -> str | None:
 
 
 @st.cache_data(ttl=3600)
+def get_insider_transactions(ticker: str) -> pd.DataFrame:
+    """Return insider transactions from yfinance.
+    Columns: Shares, URL, Text, Insider, Position, Transaction, Start Date, Ownership, Value
+    """
+    try:
+        t = yf.Ticker(ticker.upper())
+        df = t.insider_transactions
+        return df if df is not None and not df.empty else pd.DataFrame()
+    except Exception:
+        return pd.DataFrame()
+
+
+@st.cache_data(ttl=3600)
+def get_sec_filings(ticker: str) -> list[dict]:
+    """Return SEC filings from yfinance.
+    Each dict has: date, type, title, edgarUrl, exhibits.
+    """
+    try:
+        t = yf.Ticker(ticker.upper())
+        filings = t.sec_filings
+        return filings if filings else []
+    except Exception:
+        return []
+
+
+@st.cache_data(ttl=3600)
 def get_free_cash_flow_series(ticker: str) -> pd.Series:
     """Return annual Free Cash Flow series (most recent first)."""
     t = yf.Ticker(ticker.upper())