Walleye Trading LLC PUBM — PUBMATIC INC

Ownership history in Walleye Trading LLC  ·  51 quarters on record

AI Ownership Summary

Walleye Trading LLC reported PUBMATIC INC (PUBM) in 51 quarterly 13F filings from 2024 Q1 through 2026 Q2. Peak portfolio weight reached 0.02% in 2026 Q2. The latest visible filing shows PUBM 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 PUBM ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Walleye Trading 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 Q2

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

High-water mark
Peak Conviction
0.02% in 2026 Q2

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 Q2

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 Walleye Trading LLC fund profile Walleye Trading LLC full holdings
How Walleye Trading 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 26 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q2 REDUCED — — — 11,560 -102,640 -89.9% 0.00% $152K 2026-08-03 $12.96
2026 Q2 REDUCED — — — 114,200 -975,800 -89.5% 0.00% $1.5M 2026-08-03 $12.96
2026 Q2 ADDED — — — 1,090,000 +1,076,917 +8231.4% 0.02% $14.3M 2026-08-03 $12.96
2026 Q1 REDUCED 89.9% +59.8% ❌ 13,083 -116,917 -89.9% 0.00% $107K 2026-05-11 $9.88
2026 Q1 REDUCED 77.2% +59.8% ❌ 130,000 -441,100 -77.2% 0.00% $1.1M 2026-05-11 $9.88
2026 Q1 ADDED — — — 571,100 +540,520 +1767.6% 0.01% $4.7M 2026-05-11 $9.88
2025 Q4 ADDED — — — 30,580 +24,180 +377.8% 0.00% $271K 2026-02-13 $6.54
2025 Q4 REDUCED 60.0% -7.8% ✅ 6,400 -9,600 -60.0% 0.00% $57K 2026-02-13 $6.54
2025 Q4 REDUCED 77.3% -7.8% ✅ 16,000 -54,567 -77.3% 0.00% $142K 2026-02-13 $6.54
2025 Q3 ADDED — — — 70,567 +60,467 +598.7% 0.00% $584K 2025-11-14 $9.43
2025 Q3 ADDED — — — 10,100 +5,100 +102.0% 0.00% $84K 2025-11-14 $9.43
2025 Q3 REDUCED 88.5% +8.2% ❌ 5,000 -38,332 -88.5% 0.00% $41K 2025-11-14 $9.43
2025 Q2 ADDED — — — 43,332 +32,732 +308.8% 0.00% $539K 2025-08-13 $8.48
2025 Q2 ADDED — — — 10,600 +5,300 +100.0% 0.00% $132K 2025-08-13 $8.48
2025 Q2 REDUCED 58.3% -31.9% ✅ 5,300 -7,409 -58.3% 0.00% $66K 2025-08-13 $8.48
2024 Q4 REDUCED 72.3% -37.8% ✅ 12,709 -33,191 -72.3% 0.00% $187K 2025-02-13 $15.80
2024 Q4 ADDED — — — 45,900 +32,100 +232.6% 0.00% $674K 2025-02-13 $15.80
2024 Q4 ADDED — — — 13,800 +13,064 +1775.0% 0.00% $203K 2025-02-13 $15.80
2024 Q3 REDUCED 94.0% +0.5% ❌ 736 -11,464 -94.0% 0.00% $11K 2024-11-14 $15.63
2024 Q3 ADDED — — — 12,200 +11,500 +1642.9% 0.00% $181K 2024-11-14 $15.63
2024 Q3 REDUCED 98.2% +0.5% ❌ 700 -38,700 -98.2% 0.00% $10K 2024-11-14 $15.63
2024 Q2 ADDED — — — 39,400 +22,700 +135.9% 0.00% $800K 2024-08-14 $13.66
2024 Q2 REDUCED 70.2% -26.8% ✅ 16,700 -39,261 -70.2% 0.00% $339K 2024-08-14 $13.66
2024 Q1 ADDED — — — 55,961 +5,061 +9.9% 0.00% $1.3M 2024-05-15 $23.29
2024 Q1 ADDED — — — 50,900 +33,400 +190.9% 0.00% $1.2M 2024-05-15 $23.29
2024 Q1 REDUCED 59.5% -14.0% ✅ 17,500 -25,691 -59.5% 0.00% $415K 2024-05-15 $23.29
25 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding PUBM

As of 2026 Q2 — sorted by position size

Simcoe Capital LLC 5.55% P.A.W. CAPITAL CORP 3Y 7Y 1.51% Diversified Investment Strategies, LLC 3Y 7Y 1.19% State of Wyoming 3Y 0.06% GWN SECURITIES INC. 0.05% Avestar Capital, LLC 3Y 7Y 0.04% Versant Capital Management, Inc 3Y 7Y 0.01% PANAGORA ASSET MANAGEMENT INC 3Y 7Y 0.01% Curated Wealth Partners LLC 3Y 0.01% WINTON GROUP Ltd 3Y 7Y 0.01%

FAQ About Walleye Trading 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 Walleye Trading LLC reported owning PUBM?

Walleye Trading LLC reported PUBM across 26 quarterly 13F filings, from 2024 Q1 through 2026 Q2.

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

The largest reported portfolio weight for PUBM was 0.02% in 2026 Q2.

What is the latest reported PUBM position on this page?

The most recent filing on this page is 2026 Q2, when Walleye Trading LLC reported 11,560 shares, equal to 0.00% of portfolio, with an estimated market value of $152K.

What does the chart on this PUBM ownership page compare?

The chart compares Walleye Trading 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 Walleye Trading LLC time their PUBM position?

Based on 13F filing dates vs. subsequent PUBM price moves, Walleye Trading LLC correctly timed 25 out of 50 reported position changes (50%). The annualised alpha on PUBM relative to SPY over the holding period was -29.2%.

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