ProShare Advisors LLC ANNX — ANNEXON INC

Ownership history in ProShare Advisors LLC  ·  13 quarters on record

AI Ownership Summary

ProShare Advisors LLC reported ANNEXON INC (ANNX) in 13 quarterly 13F filings from 2024 Q1 through 2026 Q1. The latest visible filing shows ANNX at 0.00% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this ANNX ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was ProShare Advisors LLC's position in ANNEXON INC, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2026 Q1

ANNX was reported at 0.00% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.0% in 2024 Q4

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2024 Q1 to 2026 Q1

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

ANNX stock page ProShare Advisors LLC fund profile ProShare Advisors LLC full holdings
How ProShare Advisors LLC held ANNX — position size vs. price
% of Fund (quarterly)    ANNX price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 8 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 ADDED — — — 25,595 +897 +3.6% 0.00% $142K 2026-04-27 $6.10
2025 Q4 ADDED — — — 24,698 +4,410 +21.7% 0.00% $124K 2026-02-06 $5.73
2025 Q3 REDUCED 14.5% +63.9% ❌ 20,288 -3,444 -14.5% 0.00% $62K 2025-11-06 $3.02
2025 Q2 REDUCED 8.5% +30.0% ❌ 23,732 -2,216 -8.5% 0.00% $57K 2025-08-07 $2.37
2025 Q1 REDUCED 20.3% +24.4% ❌ 25,948 -6,600 -20.3% 0.00% $50K 2025-05-08 $1.70
2024 Q4 ADDED — — — 32,548 +14,475 +80.1% 0.00% $167K 2025-02-14 $3.07
2024 Q3 ADDED — — — 18,073 +5,971 +49.3% 0.00% $107K 2024-11-14 $6.33
2024 Q1 REDUCED — — — 12,102 -115 -0.9% 0.00% $87K 2024-05-08 $4.87
5 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding ANNX

As of 2026 Q1 — sorted by position size

Y-Intercept (Hong Kong) Ltd 3Y 0.14% MOUNT VERNON ASSOCIATES INC /MD/ 3Y 7Y 0.04% Allegheny Financial Group 3Y 0.03% China Universal Asset Management Co., Ltd. 3Y 0.02% PROFUND ADVISORS LLC 3Y 7Y 0.02% Abel Hall, LLC 0.01% E Fund Management Co., Ltd. 3Y 0.0% SBI Securities Co., Ltd. 0.0% Police & Firemen's Retirement System of New Jersey 0.0% STRS OHIO 3Y 7Y 0.0%

FAQ About ProShare Advisors LLC and ANNX

These are the practical questions this page is built to answer before you even open the full history table.

How long has ProShare Advisors LLC reported owning ANNX?

ProShare Advisors LLC reported ANNX across 8 quarterly 13F filings, from 2024 Q1 through 2026 Q1.

What was the largest reported ANNX position in ProShare Advisors LLC's portfolio?

The largest reported portfolio weight for ANNX was 0.00% in 2024 Q4.

What is the latest reported ANNX position on this page?

The most recent filing on this page is 2026 Q1, when ProShare Advisors LLC reported 25,595 shares, equal to 0.00% of portfolio, with an estimated market value of $142K.

What does the chart on this ANNX ownership page compare?

The chart compares ProShare Advisors LLC's quarterly ANNX portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did ProShare Advisors LLC time their ANNX position?

Based on 13F filing dates vs. subsequent ANNX price moves, ProShare Advisors LLC correctly timed 2 out of 12 reported position changes (17%). The annualised alpha on ANNX relative to SPY over the holding period was -41.3%.

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