What does CUSIP 743713109 represent in this 13F holders report?

CUSIP 743713109 is the security identifier for PRLB - Proto Labs Inc - Common Stock used to aggregate holder disclosures.

How many institutions held PRLB - Proto Labs Inc - Common Stock in Q1 2017?

181 institutional investors reported PRLB - Proto Labs Inc - Common Stock for Q1 2017. Use the holders table for investor-level position and value details.

Proto Labs Inc - Common Stock (PRLB)

CUSIP: 743713109

Q1 2017 13F Holders as of 31 Mar 2017

Type / Class: Equity / Common Stock
Shares outstanding: 23,799,118
Total 13F shares: 27,342,585
Share change: +1,795,274
Total reported value: $1,397,916,435
Put/Call ratio: 82%
Price per share: $51.10
Number of holders: 181
Value change: +$91,569,737
Number of buys: 90
Number of sells: 87

Quarterly Holders Quick Answers

What is CUSIP 743713109?
CUSIP 743713109 identifies PRLB - Proto Labs Inc - Common Stock in SEC institutional holdings data.

Need full ownership history?
Open the full security ownership history page.

Next holder-history checks

These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.

Back to full security ownership history for the broader multi-quarter picture.
Latest 13F filings for newly reported positions across managers.
Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
SEC investors directory for manager drilldown.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q2 2017
Previous quarter: Q4 2016

Recent filing periods for CUSIP 743713109:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of PRLB - Proto Labs Inc - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
BROWN CAPITAL MANAGEMENT LLC	13F	Company	16%	3,694,345	$189,705,000	—	31 Dec 2016	13F
VANGUARD GROUP INC	13F	Company	8.5%	2,015,671	$103,504,000	—	31 Dec 2016	13F
RIVERBRIDGE PARTNERS LLC	13F	Company	8.4%	1,996,928	$102,542,000	—	31 Dec 2016	13F
BlackRock Fund Advisors	13F	Company	7.9%	1,880,371	$96,557,000	—	31 Dec 2016	13F
TimesSquare Capital Management, LLC	13F	Company	6.5%	1,547,950	$79,487,000	—	31 Dec 2016	13F
JANUS HENDERSON INVESTORS US LLC	13F	Company	5.4%	1,281,770	$65,819,000	—	31 Dec 2016	13F
ArrowMark Colorado Holdings LLC	13F	Company	4.9%	1,164,532	$59,799,000	—	31 Dec 2016	13F
JPMORGAN CHASE & CO	13F	Company	4.6%	1,103,728	$56,677,000	—	31 Dec 2016	13F
DISCIPLINED GROWTH INVESTORS INC /MN	13F	Company	4.1%	970,600	$49,840,000	—	31 Dec 2016	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	3%	725,653	$37,262,000	—	31 Dec 2016	13F
BlackRock Institutional Trust Company, N.A.	13F	Company	2.8%	660,855	$33,935,000	—	31 Dec 2016	13F
Stephens Investment Management Group LLC	13F	Company	2.6%	614,578	$31,559,000	—	31 Dec 2016	13F
Fiera Capital Corp	13F	Company	2.3%	541,236	$27,793,000	—	31 Dec 2016	13F
STATE STREET CORP	13F	Company	2.2%	517,066	$26,552,000	—	31 Dec 2016	13F
NORGES BANK	13F	Company	2%	475,166	$24,400,000	—	31 Dec 2016	13F
Capital Research Global Investors	13F	Company	2%	466,700	$23,965,000	—	31 Dec 2016	13F
Conestoga Capital Advisors, LLC	13F	Company	1.7%	398,031	$20,439,000	—	31 Dec 2016	13F
NORTHERN TRUST CORP	13F	Company	1.6%	383,670	$19,702,000	—	31 Dec 2016	13F
MAIRS & POWER INC	13F	Company	1.6%	374,044	$19,207,000	—	31 Dec 2016	13F
Bank of New York Mellon Corp	13F	Company	1.4%	328,244	$16,856,000	—	31 Dec 2016	13F
Artisan Partners Limited Partnership	13F	Company	1.3%	320,597	$16,463,000	—	31 Dec 2016	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	1.3%	306,896	$15,759,000	—	31 Dec 2016	13F
ROYAL BANK OF CANADA	13F	Company	1.1%	267,498	$13,736,000	—	31 Dec 2016	13F
BANK OF AMERICA CORP /DE/	13F	Company	1.1%	265,191	$13,617,000	—	31 Dec 2016	13F
JANUS HENDERSON GROUP PLC	13F	Company	1.1%	264,871	$13,601,000	—	31 Dec 2016	13F
Quantum Capital Management, LLC / NJ	13F	Company	1.1%	258,724	$13,285,000	—	31 Dec 2016	13F
MANUFACTURERS LIFE INSURANCE COMPANY, THE	13F	Company	1%	245,428	$12,602,000	—	31 Dec 2016	13F
THRIVENT FINANCIAL FOR LUTHERANS	13F	Company	0.96%	228,132	$11,715,000	—	31 Dec 2016	13F
Crestwood Capital Management, L.P.	13F	Company	0.94%	224,700	$11,538,000	—	31 Dec 2016	13F
TIVERTON ASSET MANAGEMENT LLC	13F	Company	0.84%	200,157	$10,279,000	—	31 Dec 2016	13F
FRED ALGER MANAGEMENT, LLC	13F	Company	0.84%	199,913	$10,266,000	—	31 Dec 2016	13F
Nationwide Fund Advisors	13F	Company	0.84%	199,605	$10,250,000	—	31 Dec 2016	13F
BLAIR WILLIAM & CO/IL	13F	Company	0.77%	182,224	$9,357,000	—	31 Dec 2016	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.75%	178,333	$9,157,000	—	31 Dec 2016	13F
ARK Investment Management LLC	13F	Company	0.74%	176,335	$9,055,000	—	31 Dec 2016	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.73%	173,218	$8,894,000	—	31 Dec 2016	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.72%	170,178	$8,739,000	—	31 Dec 2016	13F
MORGAN STANLEY	13F	Company	0.56%	132,536	$6,807,000	—	31 Dec 2016	13F
BlackRock Investment Management, LLC	13F	Company	0.52%	124,837	$6,410,000	—	31 Dec 2016	13F
AMERICAN CAPITAL MANAGEMENT INC	13F	Company	0.51%	121,589	$6,244,000	—	31 Dec 2016	13F
Capital Investment Services of America, Inc.	13F	Company	0.5%	118,897	$6,105,000	—	31 Dec 2016	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.49%	115,539	$5,933,000	—	31 Dec 2016	13F
Century Capital Management, LLC	13F	Company	0.47%	112,352	$5,769,000	—	31 Dec 2016	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.47%	111,578	$5,730,000	—	31 Dec 2016	13F
WEATHERBIE CAPITAL, LLC	13F	Company	0.43%	101,494	$5,212,000	—	31 Dec 2016	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.42%	99,789	$5,125,000	—	31 Dec 2016	13F
SEI INVESTMENTS CO	13F	Company	0.42%	99,801	$5,124,000	—	31 Dec 2016	13F
Granahan Investment Management, LLC	13F	Company	0.38%	91,450	$4,696,000	—	31 Dec 2016	13F
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO	13F	Company	0.35%	82,900	$4,630,000	—	31 Dec 2016	13F
TIAA CREF INVESTMENT MANAGEMENT LLC	13F	Company	0.3%	70,487	$3,620,000	—	31 Dec 2016	13F

Institutional Holders of Proto Labs Inc - Common Stock (PRLB) as of Q1 2017

As of 31 Mar 2017, Proto Labs Inc - Common Stock (PRLB) was held by 181 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 27,342,585 shares. The largest 10 holders included BROWN CAPITAL MANAGEMENT LLC, BlackRock Inc., VANGUARD GROUP INC, RIVERBRIDGE PARTNERS LLC, JANUS CAPITAL MANAGEMENT LLC, ArrowMark Colorado Holdings LLC, TimesSquare Capital Management, LLC, JPMORGAN CHASE & CO, DISCIPLINED GROWTH INVESTORS INC /MN, and Stephens Investment Management Group LLC. This page lists 181 institutional shareholders reporting positions in this security for the Q1 2017 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2017 vs Q4 2016 Across Filers

Q4 2016 holders

192

Q1 2017 holders

181

Holder diff

-11

Investor	Q4 2016 Shares	Q1 2017 Shares	Share Diff	Share Chg %	Q4 2016 Value $	Q1 2017 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.