Stock Ownership/MLAB

MESA LABS INC (MLAB): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in MLAB · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
13
13F filers
Aggregate Value
$48.7M
Across holders
Last Price
$124.32
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity12 increased1 reduced3 exited
Full exits: TUDOR INVESTMENT CORP ET AL, Select Equity Group, L.P., Squarepoint Ops LLC
Institutional Holders of MLAB
↗
13 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund204K$20.3M41.6%0.0%Added+$20.3MQ2 2026
SHAW D E & CO INC
CIK 0001009207
Hedge Fund82K$8.1M16.7%0.0%Added+$2.7MQ2 2026
Qube Research & Technologies Ltd
CIK 0001729829
Hedge Fund37K$3.7M7.6%0.0%Added—Q2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund36K$3.6M7.3%0.0%Added+$2.7MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund29K$2.9M6.0%0.0%Added+$1.3MQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund29K$2.9M5.9%0.0%Reduced$-269KQ2 2026
Man Group plc
CIK 0001637460
Hedge Fund24K$2.4M4.9%0.0%Added+$2.1MQ2 2026
Point72 Asset Management, L.P.
CIK 0001603466
Hedge Fund23K$2.2M4.6%0.0%Added+$618KQ2 2026
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund9K$870K1.8%0.0%Added—Q2 2026
GAMCO INVESTORS, INC. ET AL
CIK 0000807249
Institutional Manager8K$830K1.7%0.0%Added+$50KQ2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$20.3M· 41.6% of total· 0.0% port· 204K sh· +$20.3M QoQ· Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$8.1M· 16.7% of total· 0.0% port· 82K sh· +$2.7M QoQ· Q2 2026
Qube Research & Technologies LtdAdded
Hedge Fund
$3.7M· 7.6% of total· 0.0% port· 37K sh· — QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$3.6M· 7.3% of total· 0.0% port· 36K sh· +$2.7M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$2.9M· 6.0% of total· 0.0% port· 29K sh· +$1.3M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCReduced
Hedge Fund
$2.9M· 5.9% of total· 0.0% port· 29K sh· $-269K QoQ· Q2 2026
Man Group plcAdded
Hedge Fund
$2.4M· 4.9% of total· 0.0% port· 24K sh· +$2.1M QoQ· Q2 2026
Point72 Asset Management, L.P.Added
Hedge Fund
$2.2M· 4.6% of total· 0.0% port· 23K sh· +$618K QoQ· Q2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$870K· 1.8% of total· 0.0% port· 9K sh· — QoQ· Q2 2026
GAMCO INVESTORS, INC. ET ALAdded
Institutional Manager
$830K· 1.7% of total· 0.0% port· 8K sh· +$50K QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$447K· 0.9% of total· 0.0% port· 4K sh· — QoQ· Q2 2026
Magnetar Financial LLCAdded
Hedge Fund
$412K· 0.8% of total· 0.0% port· 4K sh· — QoQ· Q2 2026
Rockefeller Capital Management L.P.Added
Hedge Fund
$23K· 0.0% of total· 0.0% port· 234 sh· +$10K QoQ· Q2 2026
1–10 of 13
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