AlphaQuest LLC PRLB — PROTO LABS INC

Ownership history in AlphaQuest LLC  ·  10 quarters on record

AI Ownership Summary

AlphaQuest LLC reported PROTO LABS INC (PRLB) in 10 quarterly 13F filings from 2023 Q4 through 2026 Q1. Peak portfolio weight reached 0.13% in 2024 Q2. The latest visible filing shows PRLB at 0.03% 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 PRLB 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 PROTO LABS 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

PRLB was reported at 0.03% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.13% in 2024 Q2

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.

PRLB stock page AlphaQuest LLC fund profile AlphaQuest LLC full holdings
How AlphaQuest LLC held PRLB — position size vs. price
% of Fund (quarterly)    PRLB price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 10 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 UNCHANGED — — — 8,881 — 0% 0.03% $449K 2026-04-30 $64.81
2025 Q4 ADDED — — — 8,881 +3,503 +65.1% 0.03% $449K 2026-02-09 $65.91
2025 Q3 REDUCED 77.1% +4.6% ❌ 5,378 -18,130 -77.1% 0.02% $269K 2025-11-03 $53.47
2025 Q2 ADDED — — — 23,508 +23,500 +293750.0% 0.09% $941K 2025-07-31 $43.12
2025 Q1 REDUCED 97.7% +14.3% ❌ 8 -344 -97.7% 0.00% $280 2025-05-14 $40.59
2024 Q4 REDUCED 96.0% -10.4% ✅ 352 -8,509 -96.0% 0.00% $14K 2025-02-07 $41.60
2024 Q3 REDUCED 70.9% +33.7% ❌ 8,861 -21,542 -70.9% 0.02% $260K 2024-11-07 $38.61
2024 Q2 ADDED — — — 30,403 +18,068 +146.5% 0.13% $939K 2024-08-06 $29.61
2024 Q1 ADDED — — — 12,335 +11,974 +3316.9% 0.08% $441K 2024-05-09 $32.29
2023 Q4 INITIATED — — — 361 — — 0.00% $14K 2024-02-09 $35.58

🏢 Other funds also holding PRLB

As of 2026 Q1 — sorted by position size

GAGNON SECURITIES LLC 3Y 7Y 1.46% Argos Wealth Advisors, LLC 0.13% NBC SECURITIES, INC. 0.02% Diversified Trust Co 3Y 7Y 0.01% Leonteq Securities AG 0.01% Louisiana State Employees Retirement System 3Y 7Y 0.01% USA FINANCIAL FORMULAS 3Y 7Y 0.01% Hoese & Co LLP 3Y 0.01% State of Alaska, Department of Revenue 3Y 7Y 0.01% Auto-Owners Insurance Co 3Y 0.01%

FAQ About AlphaQuest LLC and PRLB

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 PRLB?

AlphaQuest LLC reported PRLB across 10 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

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

The largest reported portfolio weight for PRLB was 0.13% in 2024 Q2.

What is the latest reported PRLB position on this page?

The most recent filing on this page is 2026 Q1, when AlphaQuest LLC reported 8,881 shares, equal to 0.03% of portfolio, with an estimated market value of $449K.

What does the chart on this PRLB ownership page compare?

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

Based on 13F filing dates vs. subsequent PRLB price moves, AlphaQuest LLC correctly timed 3 out of 9 reported position changes (33%). The annualised alpha on PRLB relative to SPY over the holding period was +10.0%.

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