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BioLife Solutions BLFS

US equityMarket cap rank #2817Medical Instruments & Supplies
$38.61 +$1.31 (+3.51%)
Market closed · Oct 6, 4:00 am ET · Last extended-hours $38.61 0.00%
Open$37.16
Prev close$37.30
Day range$36.95 – $38.83
Volume4.45M
Market cap$1.89B
P/E (TTM)32.7
Dividend yield–

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership101.7%-0.38 pts vs. prior quarter
Institutions holding264+7 vs. prior quarter
Insider trades (recent)5 buys / 45 sellsNet selling
Short interest7.94% of floatDays to cover 4.5 · as of 15 Sep 2026
Short-sale volume share17.8%5-day average of daily volume

Short-sale volume as % of daily volume

10%15%19%23%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$5.60M (6 inflow days, 14 outflow days).

The five largest holders on file together own 40.1% of shares outstanding.

Largest holders

  • BlackRock13.04%
  • Casdin Capital, LLC9.52%
  • T. Rowe Price Group, Inc.7.50%
  • Glazer Capital, LLC5.49%
  • Vanguard Capital Management, LLC4.57%
  • Invesco Ltd.4.45%
  • State Street Global Advisors3.39%
  • Geode Capital Management, LLC2.22%

By investor type

  • Mutual Fund74.49%
  • Hedge Fund10.48%
  • VC/PE Fund9.52%
  • Public Company3.07%
  • Individual/Insider2.93%
  • Government Pension Fund1.53%
  • Private Company1.15%
  • Insurance Company1.10%

Reported short interest has risen from 6.17% to 7.94% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 3,884,193 7.9% 4.5
31 Aug 2026 3,925,949 8.0% 4.8
14 Aug 2026 4,017,528 8.2% 7.8
31 Jul 2026 4,544,348 9.3% 2.1
15 Jul 2026 2,856,425 5.8% 5.0
30 Jun 2026 3,013,891 6.2% 2.0

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