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 Q4 2018?

263 institutional investors reported PRLB - Proto Labs Inc - Common Stock for Q4 2018. Use the holders table for investor-level position and value details.

Proto Labs Inc - Common Stock (PRLB)

CUSIP: 743713109

Q4 2018 13F Holders as of 31 Dec 2018

Type / Class: Equity / Common Stock
Shares outstanding: 23,787,942
Total 13F shares: 25,168,810
Share change: -762,997
Total reported value: $2,839,412,863
Put/Call ratio: 89%
Price per share: $112.79
Number of holders: 263
Value change: -$99,002,937
Number of buys: 108
Number of sells: 122

Quarterly Holders Quick Answers

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

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Explore More Reporting Periods

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

Newer quarter: Q1 2019
Previous quarter: Q3 2018

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
BlackRock Finance, Inc.	13F	Company	16%	3,924,345	$634,763,000	—	30 Sep 2018	13F
BROWN CAPITAL MANAGEMENT LLC	13F	Company	16%	3,716,383	$601,125,000	—	30 Sep 2018	13F
VANGUARD GROUP INC	13F	Company	11%	2,625,466	$424,668,000	—	30 Sep 2018	13F
RIVERBRIDGE PARTNERS LLC	13F	Company	7.1%	1,679,478	$271,655,000	—	30 Sep 2018	13F
JANUS HENDERSON GROUP PLC	13F	Company	4.5%	1,065,056	$172,273,000	—	30 Sep 2018	13F
DISCIPLINED GROWTH INVESTORS INC /MN	13F	Company	3.9%	939,135	$151,905,000	—	30 Sep 2018	13F
STATE STREET CORP	13F	Company	3.2%	755,845	$122,256,000	—	30 Sep 2018	13F
Conestoga Capital Advisors, LLC	13F	Company	2.9%	690,326	$111,660,000	—	30 Sep 2018	13F
Stephens Investment Management Group LLC	13F	Company	2.3%	557,886	$90,238,000	—	30 Sep 2018	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	2.2%	533,557	$86,303,000	—	30 Sep 2018	13F
LORD, ABBETT & CO. LLC	13F	Company	2.1%	493,077	$79,755,000	—	30 Sep 2018	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	1.8%	431,576	$69,806,000	—	30 Sep 2018	13F
NORTHERN TRUST CORP	13F	Company	1.8%	423,903	$68,565,000	—	30 Sep 2018	13F
JPMORGAN CHASE & CO	13F	Company	1.7%	405,520	$65,594,000	—	30 Sep 2018	13F
Handelsbanken Fonder AB	13F	Company	1.7%	400,236	$64,738,000	—	30 Sep 2018	13F
Bank of New York Mellon Corp	13F	Company	1.6%	372,470	$60,247,000	—	30 Sep 2018	13F
NORGES BANK	13F	Company	1.5%	358,698	$58,020,000	—	30 Sep 2018	13F
ArrowMark Colorado Holdings LLC	13F	Company	1.4%	344,916	$55,790,000	—	30 Sep 2018	13F
MAIRS & POWER INC	13F	Company	1.1%	267,255	$43,228,000	—	30 Sep 2018	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	1.1%	258,280	$41,776,000	—	30 Sep 2018	13F
AMERIPRISE FINANCIAL INC	13F	Company	1.1%	250,308	$40,488,000	—	30 Sep 2018	13F
LOOMIS SAYLES & CO L P	13F	Company	0.98%	233,764	$37,811,000	—	30 Sep 2018	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.97%	231,479	$37,441,000	—	30 Sep 2018	13F
VICTORY CAPITAL MANAGEMENT INC	13F	Company	0.93%	221,260	$35,788,000	—	30 Sep 2018	13F
FRED ALGER MANAGEMENT, LLC	13F	Company	0.89%	212,586	$34,386,000	—	30 Sep 2018	13F
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO	13F	Company	0.83%	197,230	$31,902,000	—	30 Sep 2018	13F
ROYAL BANK OF CANADA	13F	Company	0.83%	196,449	$31,776,000	—	30 Sep 2018	13F
Matarin Capital Management, LLC	13F	Company	0.76%	180,436	$29,185,524	—	30 Sep 2018	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.62%	147,822	$23,911,000	—	30 Sep 2018	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.59%	140,488	$22,725,000	—	30 Sep 2018	13F
AMERICAN CAPITAL MANAGEMENT INC	13F	Company	0.56%	132,409	$21,417,000	—	30 Sep 2018	13F
MORGAN STANLEY	13F	Company	0.52%	124,836	$20,192,000	—	30 Sep 2018	13F
BLAIR WILLIAM & CO/IL	13F	Company	0.47%	112,379	$18,177,000	—	30 Sep 2018	13F
AMUNDI ASSET MANAGEMENT US, INC.	13F	Company	0.41%	97,620	$15,790,000	—	30 Sep 2018	13F
Capital Investment Services of America, Inc.	13F	Company	0.35%	83,302	$13,474,000	—	30 Sep 2018	13F
ARK Investment Management LLC	13F	Company	0.34%	80,843	$13,076,000	—	30 Sep 2018	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.33%	79,657	$12,884,000	—	30 Sep 2018	13F
FIRST TRUST ADVISORS LP	13F	Company	0.33%	77,920	$12,604,000	—	30 Sep 2018	13F
PARAMETRIC PORTFOLIO ASSOCIATES LLC	13F	Company	0.32%	75,910	$12,278,000	—	30 Sep 2018	13F
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO	13F	Company	0.31%	73,642	$11,912,000	—	30 Sep 2018	13F
DEUTSCHE BANK AG\	13F	Company	0.3%	71,482	$11,562,000	—	30 Sep 2018	13F
PICTON MAHONEY ASSET MANAGEMENT	13F	Company	0.28%	67,300	$10,884,000	—	30 Sep 2018	13F
OPPENHEIMER ASSET MANAGEMENT INC.	13F	Company	0.28%	67,275	$10,883,000	—	30 Sep 2018	13F
Invesco Ltd.	13F	Company	0.28%	65,622	$10,614,000	—	30 Sep 2018	13F
GS Investments, Inc.	13F	Company	0.28%	65,550	$10,602,713	—	30 Sep 2018	13F
SCOUT INVESTMENTS, INC.	13F	Company	0.27%	65,301	$10,562,000	—	30 Sep 2018	13F
Motley Fool Wealth Management, LLC	13F	Company	0.27%	63,939	$10,342,000	—	30 Sep 2018	13F
Legal & General Group Plc	13F	Company	0.27%	63,563	$10,235,000	—	30 Sep 2018	13F
RHUMBLINE ADVISERS	13F	Company	0.26%	62,053	$10,037,000	—	30 Sep 2018	13F
CARILLON TOWER ADVISERS, INC.	13F	Company	0.26%	61,734	$9,985,000	—	30 Sep 2018	13F

Institutional Holders of Proto Labs Inc - Common Stock (PRLB) as of Q4 2018

As of 31 Dec 2018, Proto Labs Inc - Common Stock (PRLB) was held by 263 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 25,168,810 shares. The largest 10 holders included BlackRock Inc., BROWN CAPITAL MANAGEMENT LLC, Vanguard Group Inc, RIVERBRIDGE PARTNERS LLC, JANUS HENDERSON GROUP PLC, DISCIPLINED GROWTH INVESTORS INC /MN, STATE STREET CORP, Stephens Investment Management Group LLC, Conestoga Capital Advisors, LLC, and NEW YORK STATE COMMON RETIREMENT FUND. This page lists 263 institutional shareholders reporting positions in this security for the Q4 2018 filing period.

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

Compare Q4 2018 vs Q3 2018 Across Filers

Q3 2018 holders

257

Q4 2018 holders

263

Holder diff

Investor	Q3 2018 Shares	Q4 2018 Shares	Share Diff	Share Chg %	Q3 2018 Value $	Q4 2018 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.