PRLB — PROTO LABS INC

Ownership history in BRIDGEWAY CAPITAL MANAGEMENT, LLC  ·  13 quarters on record

AI Ownership Summary

BRIDGEWAY CAPITAL MANAGEMENT, LLC reported PROTO LABS INC (PRLB) in 13 quarterly 13F filings from 2023 Q3 through 2025 Q4. Peak portfolio weight reached 0.12% in 2025 Q4. The latest visible filing shows PRLB at 0.12% 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 PRLB ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was BRIDGEWAY CAPITAL MANAGEMENT, 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
2025 Q4

PRLB was reported at 0.12% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.12% 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 Q3 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.

PRLB stock page BRIDGEWAY CAPITAL MANAGEMENT, LLC fund profile BRIDGEWAY CAPITAL MANAGEMENT, LLC full holdings
How BRIDGEWAY CAPITAL MANAGEMENT, LLC held PRLB — position size vs. price
% of Fund (quarterly)    PRLB price (quarter-end, indexed to 100)
📋 Quarterly Holdings History 10 quarters  ▾
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 ADDED 113,876 +4,335 +4.0% 0.12% $5.8M 2026-02-14 (Est.) $67.52
2025 Q3 ADDED 109,541 +5,274 +5.1% 0.12% $5.5M 2025-11-14 $48.50
2025 Q2 ADDED 104,267 +4,873 +4.9% 0.10% $4.2M 2025-08-14 $47.85
2025 Q1 ADDED 99,394 +3,035 +3.1% 0.09% $3.5M 2025-05-15 $40.65
2024 Q4 ADDED 96,359 +43,358 +81.8% 0.08% $3.8M 2025-02-14 $44.18
2024 Q3 REDUCED 53,001 -45,456 -46.2% 0.03% $1.6M 2024-11-14 $38.03
2024 Q2 REDUCED 98,457 -35,794 -26.7% 0.07% $3.0M 2024-08-14 $29.29
2024 Q1 ADDED 134,251 +5,950 +4.6% 0.10% $4.8M 2024-05-15 $33.16
2023 Q4 ADDED 128,301 +6,528 +5.4% 0.11% $5.0M 2024-02-14 $34.68
2023 Q3 ADDED 121,773 +30,246 +33.0% 0.08% $3.2M 2023-11-14 $36.49
3 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding PRLB

As of 2025 Q4 — sorted by position size

S Squared Technology, LLC 3Y 7Y 6.0% DISCIPLINED GROWTH INVESTORS INC /MN 3Y 7Y 2.59% AMERICAN CAPITAL MANAGEMENT INC 3Y 7Y 1.41% GAGNON SECURITIES LLC 3Y 7Y 1.15% Rubric Capital Management LP 3Y 7Y 0.68% AIMZ Investment Advisors, LLC 3Y 7Y 0.57% RICE HALL JAMES & ASSOCIATES, LLC 3Y 7Y 0.32% Hillsdale Investment Management Inc. 3Y 7Y 0.23% DRIEHAUS CAPITAL MANAGEMENT LLC 3Y 7Y 0.13% Jackson Creek Investment Advisors LLC 3Y 0.13%

FAQ About BRIDGEWAY CAPITAL MANAGEMENT, 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 BRIDGEWAY CAPITAL MANAGEMENT, LLC reported owning PRLB?

BRIDGEWAY CAPITAL MANAGEMENT, LLC reported PRLB across 10 quarterly 13F filings, from 2023 Q3 through 2025 Q4.

What was the largest reported PRLB position in BRIDGEWAY CAPITAL MANAGEMENT, LLC's portfolio?

The largest reported portfolio weight for PRLB was 0.12% in 2025 Q4.

What is the latest reported PRLB position on this page?

The most recent filing on this page is 2025 Q4, when BRIDGEWAY CAPITAL MANAGEMENT, LLC reported 113,876 shares, equal to 0.12% of portfolio, with an estimated market value of $5.8M.

What does the chart on this PRLB ownership page compare?

The chart compares BRIDGEWAY CAPITAL MANAGEMENT, 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.

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