Proto Labs PRLB Institutional Ownership

NYSE PRLB

$89.71 +1.98 (+2.26%)

As of: Oct 21, 2026 · 3:59 PM EDT

Institutions by Trading Activity

276 Institutions

Increased 145 52.5%

Unchanged 42 15.2%

Reduced 89 32.2%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

93.72%

▲+1.04 pp QoQ

Shares Held by Institutions

22.46Mn

of 23.97Mn outstanding

▲+1.69% QoQ

Shares Outstanding

23.97Mn

1.51Mn held outside 13F filers

Institutional Investors

276

filed 13F for Jun 2026

▲+15 vs prior quarter

Net Shares Added (QoQ)

+372.61K

accumulated since last quarter

Value of Holdings

$1.97Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 11, 2026

Proto Labs Inc (NYSE:PRLB) had 276 institutional holders reporting a position on Form 13F for the quarter ended June 30, 2026.

Together they owned 93.72% of the outstanding stock in Q2 2026, up from 92.68% a quarter earlier.
Total shares held in Proto Labs rose 1.69% versus Q1 2026, while the number of holders rose 38.69% versus Q2 2025.
Of the 276 holders, 145 added to their positions, 89 reduced their stakes and 42 left their positions unchanged in Q2 2026.
Institutional investors held 22.46Mn shares of Proto Labs in total at the end of Q2 2026, up 372.61K from the prior quarter and up 1.35Mn from a year earlier.
BlackRock, Inc. held the largest position in PRLB at 3.9Mn shares as of June 30, 2026, or 16.26% of shares outstanding.
Holders that added the most shares of Proto Labs in Q2 2026 were Goldman Sachs Group Inc (+262.24K shares), BlackRock, Inc. (+218.35K shares), JPMorgan Chase & Co (+137.14K shares), First Trust Advisors LP (+131.92K shares) and Nuveen, LLC (+103.12K shares).
Among holders that kept a stake in Proto Labs, the biggest sellers in Q2 2026 were Rubric Capital Management LP (-377.71K shares), Dimensional Fund Advisors LP (-120.05K shares), Disciplined Growth Investors Inc (-116.84K shares), Lazard Asset Management LLC (-92.25K shares) and UBS Group AG (-71.45K shares).
Per Business Quant data, the 10 largest holders of Proto Labs at the end of Q2 2026 were BlackRock, Inc. (3.9Mn shares), Disciplined Growth Investors Inc (2.38Mn shares), Vanguard Portfolio Management LLC (1.6Mn shares), Dimensional Fund Advisors LP (1.15Mn shares), State Street Corp (1.14Mn shares), Vanguard Capital Management LLC (1.05Mn shares), American Capital Management Inc (619.85K shares), Geode Capital Management, LLC (614.03K shares), Renaissance Technologies LLC (469.25K shares) and Prudential Financial Inc (457.81K shares).

Form 13F Holdings

276 Institutional Holders

Report period 30 Jun, 2026

Total shares held 22.46Mn

Of outstanding 93.72%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	3,896,222	16.26%	▲218,347	+5.94%	$317.58Mn
2	DISCIPLINED GROWTH INVESTORS INC /MN	0001050442	2,380,514	9.93%	▼116,841	-4.68%	$194.04Mn
3	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	1,599,765	6.67%	▲61,235	+3.98%	$130.40Mn
4	DIMENSIONAL FUND ADVISORS LP	0000354204	1,152,305	4.81%	▼120,051	-9.44%	$93.92Mn
5	State Street Corp	0000093751	1,138,462	4.75%	▲46,462	+4.25%	$92.80Mn
6	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	1,054,623	4.40%	▲14,882	+1.43%	$85.96Mn
7	AMERICAN CAPITAL MANAGEMENT INC	0001320168	619,845	2.59%	▼7,860	-1.25%	$50.52Mn
8	GEODE CAPITAL MANAGEMENT, LLC	0001214717	614,028	2.56%	▲33,827	+5.83%	$50.06Mn
9	RENAISSANCE TECHNOLOGIES LLC	0001037389	469,251	1.96%	▼51,000	-9.80%	$38.25Mn
10	Prudential Financial Inc	0001137774	457,810	1.91%	▲57,569	+14.38%	$37.32Mn
11	FMR LLC	0000315066	442,659	1.85%	▲20,303	+4.81%	$36.08Mn
12	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	0001164508	440,816	1.84%	▼22,964	-4.95%	$35.93Mn
13	Nuveen, LLC	0001871926	420,059	1.75%	▲103,120	+32.54%	$34.24Mn
14	Goldman Sachs Group Inc	0000886982	403,179	1.68%	▲262,236	+186.06%	$32.86Mn
15	DRIEHAUS CAPITAL MANAGEMENT LLC	0000938206	370,151	1.54%	▲1,015	+0.27%	$30.17Mn
16	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	354,188	1.48%	▼6,015	-1.67%	$28.87Mn
17	Morgan Stanley	0000895421	314,778	1.31%	▲21,197	+7.22%	$25.66Mn
18	S SQUARED TECHNOLOGY, LLC	0001322924	288,120	1.20%	▼7,983	-2.70%	$23.48Mn
19	Northern Trust Corp	0000073124	284,562	1.19%	▲17,611	+6.60%	$23.19Mn
20	FIRST TRUST ADVISORS LP	0001125816	224,792	0.94%	▲131,922	+142.05%	$18.32Mn

Showing 1 to 20 of 276 holders