What does CUSIP 59064R109 represent in this 13F holders report?

CUSIP 59064R109 is the security identifier for MLAB - MESA LABORATORIES INC /CO/ - Common Stock used to aggregate holder disclosures.

How many institutions held MLAB - MESA LABORATORIES INC /CO/ - Common Stock in Q1 2021?

171 institutional investors reported MLAB - MESA LABORATORIES INC /CO/ - Common Stock for Q1 2021. Use the holders table for investor-level position and value details.

- Common Stock (MLAB)

CUSIP: 59064R109

Q1 2021 13F Holders as of 31 Mar 2021

Type / Class: Equity / Common Stock
Shares outstanding: 5,566,125
Total 13F shares: 4,611,973
Share change: -87,622
Total reported value: $1,124,183,042
Price per share: $243.50
Number of holders: 171
Value change: -$29,099,250
Number of buys: 79
Number of sells: 74

Quarterly Holders Quick Answers

What is CUSIP 59064R109?
CUSIP 59064R109 identifies MLAB - MESA LABORATORIES INC /CO/ - Common Stock in SEC institutional holdings data.

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Related Filing Research

Latest 13F filings for newly reported positions.
Latest Schedule 13D/13G reports for ownership changes outside 13F cadence.
Latest 10-Q/10-K reports for financial context tied to this issuer.
Recent insider transactions for executive and insider activity.
SEC investors directory and top value investors for manager drilldown.
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Explore More Reporting Periods

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

Newer quarter: Q2 2021
Previous quarter: Q4 2020

Recent filing periods for CUSIP 59064R109:

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

Top shareholders of MLAB - MESA LABORATORIES INC /CO/ - 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	14%	776,232	$222,500,000	—	31 Dec 2020	13F
Conestoga Capital Advisors, LLC	13F	Company	9.1%	504,640	$144,650,000	—	31 Dec 2020	13F
ROYCE & ASSOCIATES LP	13F	Company	5.5%	307,253	$88,071,000	—	31 Dec 2020	13F
VANGUARD GROUP INC	13F	Company	5.5%	305,786	$87,650,000	—	31 Dec 2020	13F
Invesco Ltd.	13F	Company	4.8%	265,823	$76,195,000	—	31 Dec 2020	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	4.7%	261,302	$74,900,000	—	31 Dec 2020	13F
STATE STREET CORP	13F	Company	3.1%	174,871	$50,125,000	—	31 Dec 2020	13F
KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC	13F	Company	3.1%	169,892	$48,698,000	—	31 Dec 2020	13F
Ranger Investment Management, L.P.	13F	Company	3%	164,478	$47,146,000	—	31 Dec 2020	13F
Artisan Partners Limited Partnership	13F	Company	2.4%	130,892	$37,519,000	—	31 Dec 2020	13F
ATLANTA CAPITAL MANAGEMENT CO L L C	13F	Company	2.3%	129,004	$36,978,000	—	31 Dec 2020	13F
SCHRODER INVESTMENT MANAGEMENT GROUP	13F	Company	2%	109,025	$31,251,000	—	31 Dec 2020	13F
NORTHERN TRUST CORP	13F	Company	1.4%	77,035	$22,082,000	—	31 Dec 2020	13F
WELLS FARGO & COMPANY/MN	13F	Company	1.3%	74,857	$21,457,000	—	31 Dec 2020	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	1.3%	73,024	$20,931,000	—	31 Dec 2020	13F
Russell Investments Group, Ltd.	13F	Company	1%	56,772	$16,265,000	—	31 Dec 2020	13F
Bank of New York Mellon Corp	13F	Company	1%	56,712	$16,256,000	—	31 Dec 2020	13F
AMERIPRISE FINANCIAL INC	13F	Company	1%	55,777	$15,987,000	—	31 Dec 2020	13F
DF DENT & CO INC	13F	Company	0.89%	49,622	$14,224,000	—	31 Dec 2020	13F
EAGLE ASSET MANAGEMENT INC	13F	Company	0.83%	46,393	$13,298,000	—	31 Dec 2020	13F
COMERICA BANK	13F	Company	0.71%	39,500	$11,388,000	—	31 Dec 2020	13F
MOODY ALDRICH PARTNERS LLC	13F	Company	0.69%	38,465	$11,026,000	—	31 Dec 2020	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.62%	34,654	$9,933,000	—	31 Dec 2020	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.57%	31,907	$9,146,000	—	31 Dec 2020	13F
THRIVENT FINANCIAL FOR LUTHERANS	13F	Company	0.56%	31,342	$8,984,000	—	31 Dec 2020	13F
GLENMEDE TRUST CO NA	13F	Company	0.48%	26,704	$7,653,000	—	31 Dec 2020	13F
PUTNAM INVESTMENTS LLC	13F	Company	0.48%	26,598	$7,624,000	—	31 Dec 2020	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	0.46%	25,837	$7,406,000	—	31 Dec 2020	13F
MORGAN STANLEY	13F	Company	0.46%	25,565	$7,328,000	—	31 Dec 2020	13F
ROYAL BANK OF CANADA	13F	Company	0.39%	21,795	$6,247,000	—	31 Dec 2020	13F
FRED ALGER MANAGEMENT, LLC	13F	Company	0.37%	20,318	$5,824,000	—	31 Dec 2020	13F
KING LUTHER CAPITAL MANAGEMENT CORP	13F	Company	0.36%	20,091	$5,759,000	—	31 Dec 2020	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.34%	18,908	$5,420,000	—	31 Dec 2020	13F
JPMORGAN CHASE & CO	13F	Company	0.34%	18,906	$5,420,000	—	31 Dec 2020	13F
MARSHALL WACE, LLP	13F	Company	0.33%	18,494	$5,302,000	—	31 Dec 2020	13F
Nuveen Asset Management, LLC	13F	Company	0.31%	17,473	$5,008,000	—	31 Dec 2020	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.31%	17,467	$5,007,000	—	31 Dec 2020	13F
Catawba River Capital	13F	Company	0.27%	15,232	$4,366,000	—	31 Dec 2020	13F
Raymond James Financial Services Advisors, Inc.	13F	Company	0.26%	14,219	$4,076,000	—	31 Dec 2020	13F
OAK RIDGE INVESTMENTS LLC	13F	Company	0.25%	14,171	$4,062,000	—	31 Dec 2020	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.25%	14,100	$4,042,000	—	31 Dec 2020	13F
Legal & General Group Plc	13F	Company	0.25%	13,785	$3,951,000	—	31 Dec 2020	13F
ALLIANCEBERNSTEIN L.P.	13F	Company	0.25%	13,664	$3,917,000	—	31 Dec 2020	13F
RHUMBLINE ADVISERS	13F	Company	0.24%	13,347	$3,826,000	—	31 Dec 2020	13F
BAHL & GAYNOR INC	13F	Company	0.24%	13,217	$3,789,000	—	31 Dec 2020	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.22%	12,304	$3,526,000	—	31 Dec 2020	13F
CITADEL ADVISORS LLC	13F	Company	0.22%	12,091	$3,466,000	—	31 Dec 2020	13F
RAYMOND JAMES & ASSOCIATES	13F	Company	0.2%	11,312	$3,242,000	—	31 Dec 2020	13F
Swiss National Bank	13F	Company	0.2%	11,002	$3,154,000	—	31 Dec 2020	13F
PUBLIC SECTOR PENSION INVESTMENT BOARD	13F	Company	0.19%	10,758	$3,084,000	—	31 Dec 2020	13F

Institutional Holders of MESA LABORATORIES INC /CO/ - Common Stock (MLAB) as of Q1 2021

As of 31 Mar 2021, MESA LABORATORIES INC /CO/ - Common Stock (MLAB) was held by 171 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 4,611,973 shares. The largest 10 holders included BlackRock Inc., Conestoga Capital Advisors, LLC, VANGUARD GROUP INC, ROYCE & ASSOCIATES LP, Invesco Ltd., PRICE T ROWE ASSOCIATES INC /MD/, STATE STREET CORP, KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC, Ranger Investment Management, L.P., and ATLANTA CAPITAL MANAGEMENT CO L L C. This page lists 171 institutional shareholders reporting positions in this security for the Q1 2021 filing period.

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

Compare Q1 2021 vs Q4 2020 Across Filers

Q4 2020 holders

174

Q1 2021 holders

171

Holder diff

-3

Investor	Q4 2020 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q4 2020 Value $	Q1 2021 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.