PRLBProto Labs, Inc.

$78.74

Who owns PRLB

258 institutions reported holding PRLB for 2026Q1, together 91% of the company, more than the 232 a quarter earlier.

258

Institutions reporting a position · as of 2026Q1 · up from 232 the quarter before

Shares held by institutions
22.1M

Shares held by institutions · 91% of the company · long US equity positions only, as reported on Form 13F

Reported value
$1.26B

Reported value · at 2026-03-31 prices, not today's

Top 5 holders
47%

Top 5 holders · of the whole company, between five filers

Details
Reporting quarter2026-03-31
2026Q1
Quarters on record
52
New positions
46
Positions exited
26
Added to
72
Reduced
73
Top 10 holdersof the company
58%
Institutional ownership by quarter, 2013Q2 to 2026Q1
QuarterFilersSharesReported value
2026Q125822.1M$1.26B
2025Q423221.8M$1.10B
2025Q321121.7M$1.09B
2025Q219721.6M$866M
2025Q118821.8M$765M
2024Q419821.4M$837M
2024Q319321.6M$634M
2024Q220421.4M$662M
2024Q120121.7M$774M
2023Q421821.7M$845M
2023Q318321.6M$571M
2023Q219222.2M$776M
2023Q119722.5M$745M
2022Q419823.3M$594M
2022Q321024.3M$882M
2022Q222324.5M$1.16B
Largest reported holders, 2026Q1
HolderShares% of companyValue
BlackRock Inc.3.7M15%$210M
VANGUARD GROUP INC2.8M11%$158M
DISCIPLINED GROWTH INVESTORS INC /MN2.5M10%$142M
DIMENSIONAL FUND ADVISORS LP1.3M5.2%$73M
STATE STREET CORP1.1M4.5%$62M
AMERICAN CAPITAL MANAGEMENT INC0.6M2.6%$36M
GEODE CAPITAL MANAGEMENT LLC0.6M2.4%$33M
RENAISSANCE TECHNOLOGIES LLC0.5M2.1%$30M
Rubric Capital Management LP0.5M2.0%$28M
ARROWSTREET CAPITAL LIMITED PARTNERSHIP0.5M1.9%$26M

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.

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