MLAB MESA LABORATORIES INC /CO/: institutional ownership and insider trading
175 funds reported holding $583M of MESA LABORATORIES INC /CO/ in their latest 13F filings; in Q2 2026 funds net bought $24.9M, with 18 new positions and 18 funds selling out; over the last 12 months insiders bought $1.35M and sold $1.57M on the open market.
Famous investors holding MLAB
- D. E. Shaw (D. E. Shaw & Co.): $8.14M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $3.57M, 0.0% of the portfolio
- Two Sigma (Two Sigma Investments): $2.91M, 0.0% of the portfolio
- Renaissance Technologies (Renaissance Technologies): $2.88M, 0.0% of the portfolio
Largest institutional holders of MLAB
- WASATCH ADVISORS LP — $50.3M
- Long Path Partners LP — $47.5M
- BlackRock, Inc. (BLK) — $43.9M
- Boston Partners — $26.4M
- VANGUARD GROUP INC — $25.3M
- VANGUARD CAPITAL MANAGEMENT LLC — $23.6M
- AQR CAPITAL MANAGEMENT LLC — $20.3M
- Ranger Investment Management, L.P. — $17.3M
- MORGAN STANLEY (MS, MS-PA, MS-PE, MS-PF, MS-PI, MS-PK, MS-PL, MS-PO, MS-PP, MS-PQ) — $15.6M
- DIAMOND HILL CAPITAL MANAGEMENT INC — $15.5M
Recent MLAB insider trades
- Aug 13, 2026: Tripeny R Tony bought 900 shares ($102K)
- Aug 13, 2026: Kadia Siddhartha bought 7,093 shares ($800K)
- Aug 13, 2026: Sullivan John James sold 7,093 shares ($800K)
- Jun 22, 2026: Sakys John sold 2,827 shares ($253K)
5%+ owners
- Long Path Smaller Companies Fund, LP: 8.6% (Schedule 13G/A, filed Jul 7, 2026)
- Wasatch Advisors LP: 6.9% (Schedule 13G, filed Oct 9, 2026)