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Of the 12 tracked institutions holding ANNX, 6 have a 3-year clone track record — 6 of them beat the S&P. Average holder's clone alpha: +5.6pt. It's a gauge of who owns the name, not just how many.
Among the 12 tracked institutional investors we monitor, ANNX (ANNEXON INC) is held with a combined value of $331.47M across 58,987,010 shares. The largest holder is FMR LLC with a position worth $111.45M. 4 funds increased their holdings. 8 funds reduced their position.
Total Institutional Value
$331.47M
Total Shares Held
58,987,010
Institutional Holders
12
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | FMR LLC | $111.45M | 0.00% | +83.5% |
| 2 | BlackRock, Inc. | $77.31M | 0.00% | +23.8% |
| 3 | STATE STREET CORP | $56.10M | 0.00% | +42.0% |
| 4 | VANGUARD GROUP INC | $38.92M | 0.00% | +32.9% |
| 5 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $19.98M | 0.03% | -18.6% |
| 6 | Point72 Asset Management, L.P. | $7.90M | 0.01% | -26.1% |
| 7 | MILLENNIUM MANAGEMENT LLC | $6.77M | 0.00% | -4.3% |
| 8 | AQR CAPITAL MANAGEMENT LLC | $3.95M | 0.00% | -11.0% |
| 9 | CITADEL ADVISORS LLC | $3.41M | 0.00% | -0.6% |
| 10 | RENAISSANCE TECHNOLOGIES LLC | $2.62M | 0.00% | -15.7% |
As of the latest SEC 13F filings, FMR LLC is the largest institutional holder of ANNX with a position worth $111.45M, representing 0.00% of their portfolio. In total, 12 institutional investors hold ANNX with a combined value of $331.47M.
Institutional investors hold $331.47M worth of ANNX stock across 12 positions. The largest institutional holder is FMR LLC with $111.45M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For ANNX, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their ANNX positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
| 2026-07-27 |
SEC Schedule 13D (activist) and 13G (passive) filings for ANNX. Filed when an investor acquires 5%+ ownership.
Last Close
$3.86
2026-10-21
YTD
-17.7%
28% of 52-week range
