AlphaQuest LLC PUBM — PUBMATIC INC

Ownership history in AlphaQuest LLC  ·  9 quarters on record

AI Ownership Summary

AlphaQuest LLC reported PUBMATIC INC (PUBM) in 9 quarterly 13F filings from 2024 Q1 through 2026 Q1. Peak portfolio weight reached 0.13% in 2024 Q4. The latest visible filing shows PUBM 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 PUBM 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 PUBMATIC 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

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

High-water mark
Peak Conviction
0.13% 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.

PUBM stock page AlphaQuest LLC fund profile AlphaQuest LLC full holdings
How AlphaQuest LLC held PUBM — position size vs. price
% of Fund (quarterly)    PUBM price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 9 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 UNCHANGED — — — 47,715 — 0% 0.02% $423K 2026-04-30 $9.78
2025 Q4 REDUCED 17.1% -7.8% ✅ 47,715 -9,813 -17.1% 0.02% $423K 2026-02-09 $6.57
2025 Q3 ADDED — — — 57,528 +46,482 +420.8% 0.03% $476K 2025-11-03 $8.31
2025 Q2 REDUCED 20.1% -31.9% ✅ 11,046 -2,779 -20.1% 0.01% $137K 2025-07-31 $12.01
2025 Q1 REDUCED 79.3% +36.1% ❌ 13,825 -53,038 -79.3% 0.01% $126K 2025-05-14 $11.71
2024 Q4 ADDED — — — 66,863 +26,324 +64.9% 0.13% $982K 2025-02-07 $16.43
2024 Q3 ADDED — — — 40,539 +22,956 +130.6% 0.05% $603K 2024-11-07 $16.08
2024 Q2 ADDED — — — 17,583 +14,926 +561.8% 0.05% $357K 2024-08-06 $19.25
2024 Q1 INITIATED — — — 2,657 — — 0.01% $63K 2024-05-09 $22.47

🏢 Other funds also holding PUBM

As of 2026 Q1 — sorted by position size

P.A.W. CAPITAL CORP 3Y 7Y 4.01% Diversified Investment Strategies, LLC 3Y 7Y 0.73% Leibman Financial Services, Inc. 0.1% Cardinal Point Capital Management ULC 0.04% Inscription Capital, LLC 3Y 0.01% Versant Capital Management, Inc 3Y 7Y 0.01% Brooklyn Investment Group 0.0% Diversified Trust Co 3Y 7Y 0.0% GAMMA Investing LLC 0.0% ADIRONDACK TRUST CO 3Y 7Y 0.0%

FAQ About AlphaQuest LLC and PUBM

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 PUBM?

AlphaQuest LLC reported PUBM across 9 quarterly 13F filings, from 2024 Q1 through 2026 Q1.

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

The largest reported portfolio weight for PUBM was 0.13% in 2024 Q4.

What is the latest reported PUBM position on this page?

The most recent filing on this page is 2026 Q1, when AlphaQuest LLC reported 47,715 shares, equal to 0.02% of portfolio, with an estimated market value of $423K.

What does the chart on this PUBM ownership page compare?

The chart compares AlphaQuest LLC's quarterly PUBM 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 PUBM position?

Based on 13F filing dates vs. subsequent PUBM price moves, AlphaQuest LLC correctly timed 2 out of 8 reported position changes (25%). The annualised alpha on PUBM relative to SPY over the holding period was -45.0%.

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