Biolife Solutions (BLFS)
Biolife Solutions on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as electromedical & electrotherapeutic apparatus.
4.0M
Short interest
settlement 2026-09-30
4.3
Days to cover
-0.2 days vs prior
44.9%
Short share of volume
2026-10-05
12
Fails to deliver
settlement 2026-09-02
Thu 5 Nov
Next earnings
estimated date
$0
Insider flow, 90 days
0 buys, 0 sells
As of 2026-10-06.
Short interest
FINRA, twice a month. The newest 24 settlements in the table, 48 in the chart. JSONAs of 30 September 2026, short interest in BLFS is 3,999,252 shares, up 73,303 shares over the last month. Over the last 48 readings it ranged from 2,683,541 shares (15 November 2024) to 4,682,670 shares (30 May 2025). At the reported average volume of 924K shares a day that is 4.3 days to cover.
Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/blfs" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-09-30 | 3,999,252 | +3.0% | 923,759 | 4.33 |
| 2026-09-15 | 3,884,193 | -1.1% | 864,475 | 4.49 |
| 2026-08-31 | 3,925,949 | -2.3% | 815,739 | 4.81 |
| 2026-08-14 | 4,017,528 | -11.6% | 512,269 | 7.84 |
| 2026-07-31 | 4,544,348 | +59.1% | 2,208,090 | 2.06 |
| 2026-07-15 | 2,856,425 | -5.2% | 574,654 | 4.97 |
| 2026-06-30 | 3,013,891 | -16.9% | 1,498,317 | 2.01 |
| 2026-06-15 | 3,625,070 | -8.8% | 735,893 | 4.93 |
| 2026-05-29 | 3,975,144 | +5.3% | 923,524 | 4.30 |
| 2026-05-15 | 3,775,495 | +4.1% | 352,217 | 10.72 |
| 2026-04-30 | 3,627,907 | +9.0% | 396,539 | 9.15 |
| 2026-04-15 | 3,329,098 | -7.5% | 317,489 | 10.49 |
| 2026-03-31 | 3,599,500 | +16.0% | 402,727 | 8.94 |
| 2026-03-13 | 3,101,825 | +3.5% | 639,414 | 4.85 |
| 2026-02-27 | 2,996,816 | -6.7% | 389,649 | 7.69 |
| 2026-02-13 | 3,213,301 | +10.0% | 447,273 | 7.18 |
| 2026-01-30 | 2,921,620 | +3.2% | 299,237 | 9.76 |
| 2026-01-15 | 2,830,919 | -5.4% | 304,019 | 9.31 |
| 2025-12-31 | 2,991,987 | +7.6% | 341,746 | 8.76 |
| 2025-12-15 | 2,780,414 | -4.8% | 278,027 | 10.00 |
| 2025-11-28 | 2,920,489 | -0.8% | 423,414 | 6.90 |
| 2025-11-14 | 2,943,338 | -4.0% | 384,841 | 7.65 |
| 2025-10-31 | 3,067,596 | -8.9% | 291,404 | 10.53 |
| 2025-10-15 | 3,366,407 | -8.7% | 436,183 | 7.72 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 5 October 2026, the short share of BLFS volume is 44.9%, up 23.5 points over the last five sessions. Over the last 30 readings it ranged from 9.7% (10 September 2026) to 58.0% (18 September 2026). The latest reading is 20.6 points above the 30-session average of 24.3%, on 809K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-05 | 364K | 809K | 44.9% | 0 |
| 2026-10-02 | 454K | 2.0M | 23.1% | 0 |
| 2026-10-01 | 117K | 304K | 38.5% | 0 |
| 2026-09-30 | 104K | 332K | 31.2% | 0 |
| 2026-09-29 | 49K | 207K | 23.6% | 0 |
| 2026-09-28 | 80K | 371K | 21.5% | 0 |
| 2026-09-25 | 82K | 386K | 21.2% | 306 |
| 2026-09-24 | 127K | 397K | 32.0% | 0 |
| 2026-09-23 | 123K | 461K | 26.7% | 0 |
| 2026-09-22 | 83K | 335K | 24.9% | 0 |
| 2026-09-21 | 32K | 104K | 30.6% | 0 |
| 2026-09-18 | 67K | 115K | 58.0% | 0 |
| 2026-09-17 | 125K | 556K | 22.5% | 0 |
| 2026-09-16 | 34K | 103K | 32.4% | 0 |
| 2026-09-15 | 39K | 269K | 14.5% | 0 |
| 2026-09-14 | 40K | 121K | 33.1% | 0 |
| 2026-09-11 | 61K | 340K | 18.0% | 13,349 |
| 2026-09-10 | 82K | 845K | 9.7% | 0 |
| 2026-09-09 | 91K | 556K | 16.4% | 0 |
| 2026-09-08 | 46K | 333K | 13.8% | 0 |
| 2026-09-04 | 26K | 88K | 29.0% | 0 |
| 2026-09-03 | 24K | 208K | 11.7% | 0 |
| 2026-09-02 | 61K | 379K | 16.1% | 0 |
| 2026-09-01 | 57K | 414K | 13.7% | 0 |
| 2026-08-31 | 99K | 555K | 17.8% | 0 |
| 2026-08-28 | 71K | 362K | 19.8% | 0 |
| 2026-08-27 | 66K | 469K | 14.0% | 0 |
| 2026-08-26 | 54K | 323K | 16.8% | 0 |
| 2026-08-25 | 107K | 489K | 21.9% | 0 |
| 2026-08-24 | 64K | 194K | 32.9% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 2 September 2026, the fails-to-deliver balance in BLFS is 12 shares, down 8 shares over the last settlement date. Over the last 30 readings it ranged from 12 shares (2 September 2026) to 40,991 shares (26 June 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-02 | 12 | $35.47 | $426 |
| 2026-08-25 | 20 | $37.19 | $744 |
| 2026-08-19 | 6,198 | $34.94 | $217K |
| 2026-08-11 | 68 | $34.64 | $2K |
| 2026-07-28 | 15,840 | $29.79 | $472K |
| 2026-07-24 | 23 | $30.77 | $708 |
| 2026-07-23 | 13 | $31.15 | $405 |
| 2026-07-08 | 84 | $27.93 | $2K |
| 2026-07-07 | 68 | $27.79 | $2K |
| 2026-07-01 | 690 | $28.24 | $19K |
| 2026-06-26 | 40,991 | $27.50 | $1.1M |
| 2026-06-22 | 148 | $26.04 | $4K |
| 2026-06-18 | 21,524 | $25.58 | $551K |
| 2026-06-15 | 730 | $26.10 | $19K |
| 2026-06-05 | 114 | $27.09 | $3K |
| 2026-06-04 | 241 | $27.25 | $7K |
| 2026-06-02 | 686 | $26.63 | $18K |
| 2026-05-19 | 3,598 | $22.30 | $80K |
| 2026-05-14 | 39 | $21.17 | $826 |
| 2026-05-13 | 66 | $21.23 | $1K |
| 2026-05-04 | 620 | $21.21 | $13K |
| 2026-04-27 | 598 | $21.38 | $13K |
| 2026-04-22 | 871 | $22.37 | $19K |
| 2026-04-16 | 1,248 | $21.19 | $26K |
| 2026-04-14 | 513 | $20.11 | $10K |
| 2026-04-13 | 174 | $19.74 | $3K |
| 2026-04-10 | 139 | $20.48 | $3K |
| 2026-04-07 | 389 | $19.27 | $7K |
| 2026-04-02 | 903 | $19.29 | $17K |
| 2026-03-31 | 150 | $18.78 | $3K |
Insider trades
SEC Form 4, newest first, 50 of 100 shown. JSONNo open-market insider trades were reported for BLFS in the last 90 days. The most recent filings are listed below. Latest filing: GOSWAMI JOYDEEP (Director) on 2026-10-06.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-10-06 | GOSWAMI JOYDEEP | Director | Disposition | 53K | price not stated in the filing | not stated | 0 |
| 2026-10-06 | Werner Sean | Chief Technology Officer | Disposition | 70K | price not stated in the filing | not stated | 0 |
| 2026-10-06 | Werner Sean | Chief Technology Officer | Tax withholding | 71K | $38.61 | $2.8M | 24K |
| 2026-10-06 | Werner Sean | Chief Technology Officer | Grant | 48K | price not stated in the filing | not stated | 95K |
| 2026-10-06 | Werner Sean | Chief Technology Officer | Grant | 46K | price not stated in the filing | not stated | 47K |
| 2026-10-06 | Berard Todd | Chief Marketing Officer | Disposition | 195K | price not stated in the filing | not stated | 0 |
| 2026-10-06 | Berard Todd | Chief Marketing Officer | Tax withholding | 46K | $38.61 | $1.8M | 157K |
| 2026-10-06 | Berard Todd | Chief Marketing Officer | Grant | 40K | price not stated in the filing | not stated | 203K |
| 2026-10-06 | Berard Todd | Chief Marketing Officer | Grant | 38K | price not stated in the filing | not stated | 163K |
| 2026-10-06 | Mathew Aby J. | EVP & Chief Scientific Officer | Disposition | 405K | price not stated in the filing | not stated | 0 |
| 2026-10-06 | Mathew Aby J. | EVP & Chief Scientific Officer | Tax withholding | 70K | $38.61 | $2.7M | 314K |
| 2026-10-06 | Mathew Aby J. | EVP & Chief Scientific Officer | Grant | 40K | price not stated in the filing | not stated | 384K |
| 2026-10-06 | Mathew Aby J. | EVP & Chief Scientific Officer | Grant | 46K | price not stated in the filing | not stated | 344K |
| 2026-10-06 | MOORE TIMOTHY L. | Director | Disposition | 45K | price not stated in the filing | not stated | 0 |
| 2026-10-06 | Hunt Anthony | Director | Disposition | 15K | price not stated in the filing | not stated | 0 |
| 2026-10-06 | DE GREEF RODERICK | Chief Executive Officer | Disposition | 826K | price not stated in the filing | not stated | 0 |
| 2026-10-06 | DE GREEF RODERICK | Chief Executive Officer | Tax withholding | 365K | $38.61 | $14.1M | 440K |
| 2026-10-06 | DE GREEF RODERICK | Chief Executive Officer | Grant | 237K | price not stated in the filing | not stated | 805K |
| 2026-10-06 | DE GREEF RODERICK | Chief Executive Officer | Grant | 226K | price not stated in the filing | not stated | 567K |
| 2026-10-06 | Coste Catherine | Director | Disposition | 14K | price not stated in the filing | not stated | 0 |
| 2026-10-06 | DuRoss Amy | Director | Disposition | 27K | price not stated in the filing | not stated | 0 |
| 2026-10-06 | Ellingson Rachel | Director | Disposition | 58K | price not stated in the filing | not stated | 0 |
| 2026-10-06 | Wichterman Troy | Chief Financial Officer | Disposition | 256K | price not stated in the filing | not stated | 0 |
| 2026-10-06 | Wichterman Troy | Chief Financial Officer | Tax withholding | 96K | $38.61 | $3.7M | 183K |
| 2026-10-06 | Wichterman Troy | Chief Financial Officer | Grant | 62K | price not stated in the filing | not stated | 279K |
| 2026-10-06 | Wichterman Troy | Chief Financial Officer | Grant | 76K | price not stated in the filing | not stated | 217K |
| 2026-09-18 | Wichterman Troy | Chief Financial Officer | Tax withholding | 937 | $36.69 | $34K | 211K |
| 2026-09-18 | DE GREEF RODERICK | President and CEO | Tax withholding | 3K | $36.69 | $102K | 728K |
| 2026-09-18 | Werner Sean | Chief Technology Officer | Tax withholding | 421 | $36.69 | $15K | 47K |
| 2026-09-18 | Mathew Aby J. | EVP & Chief Scientific Officer | Tax withholding | 564 | $36.69 | $21K | 387K |
| 2026-09-18 | Berard Todd | Chief Marketing Officer | Tax withholding | 470 | $36.69 | $17K | 162K |
| 2026-09-08 | Berard Todd | Chief Marketing Officer | Tax withholding | 356 | $35.38 | $13K | 162K |
| 2026-09-08 | Mathew Aby J. | EVP & Chief Scientific Officer | Tax withholding | 627 | $35.38 | $22K | 388K |
| 2026-09-08 | Wichterman Troy | Chief Financial Officer | Tax withholding | 1K | $35.38 | $36K | 212K |
| 2026-07-17 | Werner Sean | Chief Technology Officer | Tax withholding | 275 | $29.15 | $8K | 48K |
| 2026-07-07 | Wichterman Troy | Chief Financial Officer | Tax withholding | 844 | $27.79 | $23K | 213K |
| 2026-07-07 | Mathew Aby J. | EVP & Chief Scientific Officer | Tax withholding | 516 | $27.79 | $14K | 388K |
| 2026-07-07 | Berard Todd | Chief Marketing Officer | Tax withholding | 293 | $27.79 | $8K | 163K |
| 2026-06-18 | Berard Todd | Chief Marketing Officer | Tax withholding | 470 | $26.04 | $12K | 163K |
| 2026-06-18 | Werner Sean | Chief Technology Officer | Tax withholding | 420 | $26.04 | $11K | 48K |
| 2026-06-18 | DE GREEF RODERICK | President and CEO | Tax withholding | 3K | $26.04 | $72K | 731K |
| 2026-06-18 | Wichterman Troy | Chief Financial Officer | Tax withholding | 937 | $26.04 | $24K | 214K |
| 2026-06-18 | Mathew Aby J. | EVP & Chief Scientific Officer | Tax withholding | 564 | $26.04 | $15K | 389K |
| 2026-06-08 | Wichterman Troy | Chief Financial Officer | Tax withholding | 1K | $26.10 | $27K | 215K |
| 2026-06-08 | Berard Todd | Chief Marketing Officer | Tax withholding | 356 | $26.10 | $9K | 163K |
| 2026-06-08 | Mathew Aby J. | EVP & Chief Scientific Officer | Tax withholding | 627 | $26.10 | $16K | 390K |
| 2026-05-21 | Casdin Partners Master Fund, L.P. | 10% owner | Sell | 650K | $23.70 | $15.4M | 4.8M |
| 2026-05-20 | Casdin Partners Master Fund, L.P. | 10% owner | Sell | 250K | $23.70 | $5.9M | 5.4M |
| 2026-05-19 | Casdin Partners Master Fund, L.P. | 10% owner | Sell | 300K | $22.65 | $6.8M | 5.7M |
| 2026-04-08 | Mathew Aby J. | EVP & Chief Scientific Officer | Tax withholding | 515 | $19.27 | $10K | 390K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON16 Form 144 notices on file for BLFS worth $56.8M at the prices reported; 0 in the last 90 days worth $0. Latest: Casdin Partners Master Fund, L.P. filed on 2026-05-21 to sell 650,000 shares ($15.6M) from 2026-05-21.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-05-21 | Casdin Partners Master Fund, L.P.10% Shareholder | 650K | $15.6M | 1.330% | 2026-05-21 | BMO Capital Markets |
| 2026-05-20 | Casdin Partners Master Fund, L.P10% Shareholder | 250K | $6.0M | 0.512% | 2026-05-20 | BMO Capital Markets |
| 2026-05-19 | Casdin Partners Master Fund, L.P.10% Shareholder | 300K | $6.7M | 0.614% | 2026-05-19 | BMO Capital Markets |
| 2026-03-23 | KAREN FOSTEROfficer | 3K | $49K | 0.005% | 2026-03-23 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-09 | KAREN FOSTEROfficer | 500 | $10K | 0.001% | 2026-03-09 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-05 | KAREN FOSTEROfficer | 97K | $2.0M | 0.201% | 2026-03-05 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-15 | SARAH AEBERSOLDOfficer | 713 | $17K | 0.001% | 2025-12-15 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-04 | TROY WICHTERMANOfficer | 30K | $772K | 0.062% | 2025-12-04 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-13 | RODERICK DE GREEFOfficer | 31K | $789K | 0.065% | 2025-11-13 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-12 | RODERICK DE GREEFOfficer | 33K | $865K | 0.069% | 2025-11-12 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-12 | RODERICK DE GREEFOfficer | 35K | $926K | 0.074% | 2025-11-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-12 | DuRoss AmyDirector | 12K | $317K | 0.025% | 2025-11-12 | Charles Schwab Corp |
| 2025-10-22 | DE GREEF RODERICKOfficer, Director | 38K | $1.0M | 0.079% | 2025-10-22 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-16 | GOSWAMI JOYDEEPDirector | 9K | $279K | 0.019% | 2025-10-16 | THE CHARLES SCHWAB CORPORATION |
| 2025-10-15 | Casdin Partners Master Fund, L.P.10% Shareholder | 750K | $21.4M | 1.566% | 2025-10-15 | TD SECURITIES (USA) LLC |
| 2025-09-15 | SARAH AEBERSOLDOfficer | 714 | $18K | 0.001% | 2025-09-15 | Morgan Stanley Smith Barney LLC Executive Financial Services |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON7 holders report 5% or more of BLFS in their latest filing, all on Schedule 13G (passive). The largest reported stake is Eli Casdin at 9.7% of the class (4,757,165 shares), filed 2026-06-04 for an event on 2026-06-04.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-09-24 | 13G | Paul J. Glazerindividual | 2.7M | 5.5% | 2026-09-17 |
| 2026-09-24 | 13G | Glazer Capital, LLCinvestment adviser, other entity | 2.7M | 5.5% | 2026-09-17 |
| 2026-09-08 | 13G/Ano. 3 | T. Rowe Price Investment Management, Inc.investment adviser | 3.7M | 7.5% | 2026-08-31 |
| 2026-06-04 | 13G | Eli Casdinindividual | 4.8M | 9.7% | 2026-06-04 |
| 2026-06-04 | 13G | Casdin Partners GP, LLCother entity | 4.8M | 9.7% | 2026-06-04 |
| 2026-06-04 | 13G | Casdin Partners Master Fund, L.P.partnership | 4.8M | 9.7% | 2026-06-04 |
| 2026-06-04 | 13G | Casdin Capital, LLCinvestment adviser | 4.8M | 9.7% | 2026-06-04 |
| 2026-05-06 | 13G/Ano. 2 | Invesco Ltd.parent holding company, investment adviser | 2.3M | 4.9% | 2026-03-31 |
| 2026-03-26 | 13G/Ano. 3 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
13F holders
Tracked managers holding BLFS at their latest 13F. JSON5 of the 30 tracked managers held BLFS at their latest 13F, $23.9M in total at quarter-end prices. Millennium Management is the largest at $17.7M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 3 added shares and 2 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Millennium Management | 2026-06-30 | 626K | $17.7M | 0.01% | new |
| Citadel Advisors | 2026-06-30 | 158K | $4.5M | 0.00% | -86K |
| Point72 Asset Management | 2026-06-30 | 35K | $989K | 0.00% | new |
| AQR Capital Management | 2026-06-30 | 16K | $444K | 0.00% | new |
| D. E. Shaw & Co. | 2026-06-30 | 12K | $349K | 0.00% | -90K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
Financials
SEC XBRL, as filed. JSONIn FY 2025 it generated $20.1M of operating cash flow. As of 2026-06-30, cash was $24.0M against $0 of debt.
- Cash
- $24.0M
- Debt
- $0
- Equity
- $420.0M
- Total assets
- $447.5M
- Shares outstanding
- 48,906,704
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q2 FY 2026 | 2026-06-30 | n/a | $45.1M | n/a | 0.91 |
| Q1 FY 2026 | 2026-03-31 | n/a | $1.2M | n/a | 0.02 |
| Q4 FY 2025derived | 2025-12-31 | n/a | $11.1M | n/a | n/a |
| Q3 FY 2025 | 2025-09-30 | n/a | $621K | n/a | 0.01 |
| Q2 FY 2025 | 2025-06-30 | n/a | -$15.8M | n/a | -0.33 |
| Q1 FY 2025 | 2025-03-31 | n/a | -$448K | n/a | 0.00 |
| Q4 FY 2024derived | 2024-12-31 | n/a | $12.5M | n/a | n/a |
| Q3 FY 2024 | 2024-09-30 | n/a | -$1.7M | n/a | -0.04 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | n/a | -$4.6M | $20.1M | $9.5M | n/a | n/a |
| FY 2024 | 2024-12-31 | n/a | -$20.2M | $8.4M | $3.2M | n/a | n/a |
| FY 2023 | 2023-12-31 | n/a | -$68.0M | -$12.5M | $6.4M | n/a | n/a |
| FY 2022 | 2022-12-31 | n/a | -$139.8M | -$8.5M | $10.4M | n/a | n/a |
| FY 2021 | 2021-12-31 | n/a | -$8.9M | -$4.6M | $8.4M | n/a | n/a |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-07-30 from the cover page.
What this page is
Biolife Solutions in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Biolife Solutions (BLFS), SEC CIK 834365, listed on Nasdaq, classified by the SEC as electromedical & electrotherapeutic apparatus. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-09-30.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-05.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-02.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-05-21.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-09-24.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Financials
- SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-05-07.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-10-06.JSON and CSV
- Company record
- EDGAR filing index for CIK 834365Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
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Frequently Asked Questions
How much of BLFS is sold short?
What is BLFS's daily short volume?
Does BLFS have fails to deliver?
Are BLFS insiders buying or selling?
Have BLFS insiders filed to sell?
Who owns 5% or more of BLFS?
What did BLFS report last quarter?
Which tracked 13F managers own BLFS?
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.