AI agents that read 13F filings often misread puts as bullish long positions
Capedcrusader1923 · reddit · 2026-07-25
- If an AI agent reads SEC 13F filings naively, it can confidently get three things wrong:
- Puts treated as longs: options are often parsed as notional value, and many pipelines drop the put/call field, so Burry’s short bets can be misreported as bullish longs.
- Double counting: positions can be split across sub-managers, so totals are inflated unless rows are collapsed by CUSIP.
- Staleness: 13Fs are filed up to 45 days after quarter-end, so “current holdings” may be months old.
- The author says these issues are straightforward once known, but agent demos keep repeating them because the filing looks structured enough to trust.
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