PRLBProto Labs, Inc.

$93.72+85% 1Y

Who owns PRLB

274 institutions reported holding PRLB for 2026Q2, together 92% of the company, more than the 261 a quarter earlier.

274

Institutions reporting a position · as of 2026Q2 · up from 261 the quarter before

Shares held by institutions
22.5M

Shares held by institutions · 92% of the company · long US equity positions only, as reported on Form 13F

Reported value
$1.83B

Reported value · at Jun 30, 2026 prices, not today's

Top 5 holders
47%

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

Details›
Reporting quarter2026-06-30
2026Q2
Quarters on record
53
New positions
43
Positions exited
30
Added to
93
Reduced
84
Top 10 holdersof the company
58%
Shares sold shortsettled Sep 15, 2026
0.8M
Short interestof shares outstanding
3.1%
Days to coverat the average daily volume
4.8
Change in the short positionsince the Aug 31, 2026 count
+23%
Institutional ownership by quarter, 2013Q2 to 2026Q2
QuarterFilersSharesReported value
2026Q227422.5M$1.83B
2026Q126122.1M$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
Largest reported holders, 2026Q2
HolderShares% of companyValue
BlackRock Inc.3.9M16%$318M
VANGUARD GROUP INC2.8M12%$232M
DISCIPLINED GROWTH INVESTORS INC /MN2.4M9.8%$194M
DIMENSIONAL FUND ADVISORS LP1.2M4.7%$94M
STATE STREET CORP1.1M4.7%$93M
AMERICAN CAPITAL MANAGEMENT INC0.6M2.6%$51M
GEODE CAPITAL MANAGEMENT LLC0.6M2.5%$50M
RENAISSANCE TECHNOLOGIES LLC0.5M1.9%$38M
PRUDENTIAL FINANCIAL INC0.5M1.9%$37M
FMR LLC0.4M1.8%$36M
Short interest by settlement date, Aug 29, 2025 to Sep 15, 2026
SettlementShares shortOf shares outstandingDays to cover
Sep 15, 20260.8M3.1%4.8
Aug 31, 20260.6M2.5%3.5
Aug 14, 20260.7M2.7%3.0
Jul 31, 20260.7M2.8%4.1
Jul 15, 20260.7M2.8%2.8
Jun 30, 20260.7M2.8%2.2
Jun 15, 20260.7M2.9%3.3
May 29, 20260.6M2.7%3.3
May 15, 20260.6M2.6%2.9
Apr 30, 20260.6M2.5%4.5
Apr 15, 20260.6M2.7%4.5
Mar 31, 20260.6M2.6%3.8

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. The short position is FINRA's consolidated count for each twice-monthly settlement date, as a share of shares outstanding.

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