Walleye Trading LLC BRKR — BRUKER CORP

Ownership history in Walleye Trading LLC  ·  69 quarters on record

AI Ownership Summary

Walleye Trading LLC reported BRUKER CORP (BRKR) in 69 quarterly 13F filings from 2023 Q4 through 2025 Q4. The latest visible filing shows BRKR 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 BRKR 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 BRUKER CORP, 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
2025 Q4

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

High-water mark
Peak Conviction
0.0% in 2025 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 2025 Q4

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.

BRKR stock page Walleye Trading LLC fund profile Walleye Trading LLC full holdings
How Walleye Trading LLC held BRKR — position size vs. price
% of Fund (quarterly)    BRKR price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 21 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 ADDED — — — 56,900 +33,700 +145.3% 0.00% $2.7M 2026-02-14 (Est.) $36.46
2025 Q4 ADDED — — — 23,200 +22,500 +3214.3% 0.00% $1.1M 2026-02-14 (Est.) $36.46
2025 Q3 REDUCED 96.3% +49.2% ❌ 700 -18,300 -96.3% 0.00% $23K 2025-11-14 $41.51
2025 Q3 REDUCED 30.7% +49.2% ❌ 19,000 -8,400 -30.7% 0.00% $617K 2025-11-14 $41.51
2025 Q3 REDUCED 16.7% +49.2% ❌ 27,400 -5,500 -16.7% 0.00% $890K 2025-11-14 $41.51
2025 Q2 REDUCED 25.2% -24.9% ✅ 32,900 -11,100 -25.2% 0.00% $1.4M 2025-08-13 $34.40
2025 Q2 ADDED — — — 44,000 +43,095 +4761.9% 0.00% $1.8M 2025-08-13 $34.40
2025 Q1 REDUCED 92.6% -1.2% ✅ 905 -11,395 -92.6% 0.00% $38K 2025-05-14 $36.65
2025 Q1 REDUCED 12.1% -1.2% ✅ 12,300 -1,700 -12.1% 0.00% $513K 2025-05-14 $36.65
2025 Q1 ADDED — — — 14,000 +12,400 +775.0% 0.00% $584K 2025-05-14 $36.65
2024 Q4 REDUCED 36.0% -28.7% ✅ 1,600 -900 -36.0% 0.00% $94K 2025-02-13 $50.82
2024 Q4 ADDED — — — 2,500 +2,358 +1660.6% 0.00% $147K 2025-02-13 $50.82
2024 Q3 REDUCED 97.4% -15.2% ✅ 142 -5,258 -97.4% 0.00% $10K 2024-11-14 $54.09
2024 Q3 ADDED — — — 5,400 +4,200 +350.0% 0.00% $373K 2024-11-14 $54.09
2024 Q3 ADDED — — — 1,200 +694 +137.2% 0.00% $83K 2024-11-14 $54.09
2024 Q1 REDUCED 85.9% -33.6% ✅ 506 -3,094 -85.9% 0.00% $48K 2024-05-15 $76.83
2024 Q1 ADDED — — — 3,600 +2,200 +157.1% 0.00% $338K 2024-05-15 $76.83
2024 Q1 REDUCED 86.2% -33.6% ✅ 1,400 -8,761 -86.2% 0.00% $132K 2024-05-15 $76.83
2023 Q4 ADDED — — — 10,161 +1,061 +11.7% 0.00% $747K 2024-02-14 $79.30
2023 Q4 ADDED — — — 9,100 +5,500 +152.8% 0.00% $669K 2024-02-14 $79.30
2023 Q4 REDUCED 37.3% +26.5% ❌ 3,600 -2,140 -37.3% 0.00% $265K 2024-02-14 $79.30
48 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding BRKR

As of 2026 Q1 — sorted by position size

Pallas Capital Advisors LLC 3Y 12.88% LAWSON KROEKER INVESTMENT MANAGEMENT INC/NE 3Y 7Y 1.4% FIDEURAM - INTESA SANPAOLO PRIVATE BANKING S.P.A. 0.61% PEREGRINE CAPITAL MANAGEMENT LLC 3Y 7Y 0.17% Linden Thomas Advisory Services, LLC 3Y 0.1% Legacy Wealth Asset Management, LLC 3Y 0.05% U.S. Capital Wealth Advisors, LLC 3Y 0.03% Louisiana State Employees Retirement System 3Y 7Y 0.02% REXFORD CAPITAL INC 0.02% Retirement Systems of Alabama 3Y 7Y 0.02%

FAQ About Walleye Trading LLC and BRKR

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 BRKR?

Walleye Trading LLC reported BRKR across 21 quarterly 13F filings, from 2023 Q4 through 2025 Q4.

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

The largest reported portfolio weight for BRKR was 0.00% in 2025 Q4.

What is the latest reported BRKR position on this page?

The most recent filing on this page is 2025 Q4, when Walleye Trading LLC reported 56,900 shares, equal to 0.00% of portfolio, with an estimated market value of $2.7M.

What does the chart on this BRKR ownership page compare?

The chart compares Walleye Trading LLC's quarterly BRKR 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 BRKR position?

Based on 13F filing dates vs. subsequent BRKR price moves, Walleye Trading LLC correctly timed 30 out of 68 reported position changes (44%). The annualised alpha on BRKR relative to SPY over the holding period was -2.1%.

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