AlphaQuest LLC ANAB — ANAPTYSBIO INC

Ownership history in AlphaQuest LLC  ·  8 quarters on record

AI Ownership Summary

AlphaQuest LLC reported ANAPTYSBIO INC (ANAB) in 8 quarterly 13F filings from 2023 Q4 through 2026 Q1. Peak portfolio weight reached 0.03% in 2023 Q4. The latest visible filing shows ANAB at 0.02% 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.

What this ANAB ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was AlphaQuest LLC's position in ANAPTYSBIO 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

ANAB was reported at 0.02% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.03% in 2023 Q4

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

Time in book
Holding Window
2023 Q4 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.

ANAB stock page AlphaQuest LLC fund profile AlphaQuest LLC full holdings
How AlphaQuest LLC held ANAB — position size vs. price
% of Fund (quarterly)    ANAB 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 UNCHANGED — — — 7,761 — 0% 0.02% $376K 2026-04-30 $65.73
2025 Q4 REDUCED 14.2% +14.4% ❌ 7,761 -1,282 -14.2% 0.02% $376K 2026-02-09 $33.30
2025 Q3 ADDED — — — 9,043 +4,823 +114.3% 0.02% $277K 2025-11-03 $24.03
2025 Q1 REDUCED 5.4% +19.4% ❌ 4,220 -241 -5.4% 0.01% $78K 2025-05-14 $12.97
2024 Q4 ADDED — — — 4,461 +4,237 +1891.5% 0.01% $59K 2025-02-07 $9.72
2024 Q3 REDUCED 61.8% -60.5% ✅ 224 -362 -61.8% 0.00% $8K 2024-11-07 $14.33
2024 Q1 REDUCED 89.5% +9.3% ❌ 586 -4,987 -89.5% 0.00% $13K 2024-05-09 $17.49
2023 Q4 INITIATED — — — 5,573 — — 0.03% $119K 2024-02-09 $15.34

🏢 Other funds also holding ANAB

As of 2026 Q1 — sorted by position size

Ground Swell Capital, LLC 3Y 7Y 0.83% MOODY ALDRICH PARTNERS LLC 3Y 7Y 0.39% Bayforest Capital Ltd 0.33% FMB WEALTH MANAGEMENT 0.13% TEMA ETFS LLC 0.12% China Universal Asset Management Co., Ltd. 3Y 0.03% PROFUND ADVISORS LLC 3Y 7Y 0.02% Y-Intercept (Hong Kong) Ltd 3Y 0.02% Moran Wealth Management, LLC 3Y 0.01% Nuveen, LLC 0.0%

FAQ About AlphaQuest LLC and ANAB

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

How long has AlphaQuest LLC reported owning ANAB?

AlphaQuest LLC reported ANAB across 8 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

What was the largest reported ANAB position in AlphaQuest LLC's portfolio?

The largest reported portfolio weight for ANAB was 0.03% in 2023 Q4.

What is the latest reported ANAB position on this page?

The most recent filing on this page is 2026 Q1, when AlphaQuest LLC reported 7,761 shares, equal to 0.02% of portfolio, with an estimated market value of $376K.

What does the chart on this ANAB ownership page compare?

The chart compares AlphaQuest LLC's quarterly ANAB 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 AlphaQuest LLC time their ANAB position?

Based on 13F filing dates vs. subsequent ANAB price moves, AlphaQuest LLC correctly timed 5 out of 7 reported position changes (71%). The annualised alpha on ANAB relative to SPY over the holding period was +61.7%.

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