BridgeBio Oncology Therapeutics (BBOT)
BridgeBio Oncology Therapeutics on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq.
3.8M
Short interest
settlement 2026-10-15
7.1
Days to cover
+1.7 days vs prior
34.3%
Short share of volume
2026-11-03
2,988
Fails to deliver
settlement 2026-10-02
Wed 11 Nov
Next earnings
estimated date
$0
Insider flow, 90 days
0 buys, 0 sells
As of 2026-11-03.
Short interest
FINRA, twice a month. The newest 29 settlements in the table, 29 in the chart. JSONAs of 15 October 2026, short interest in BBOT is 3,846,319 shares, up 250,340 shares over the last month. Over the last 29 readings it ranged from 43,466 shares (15 August 2025) to 6,193,538 shares (31 August 2026). At the reported average volume of 543K shares a day that is 7.1 days to cover.
Embed this chart.The embed keeps its attribution line.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 3,846,319 | +14.0% | 542,651 | 7.09 |
| 2026-09-30 | 3,374,885 | -6.2% | 624,657 | 5.40 |
| 2026-09-15 | 3,595,979 | -41.9% | 824,822 | 4.36 |
| 2026-08-31 | 6,193,538 | +6.6% | 298,249 | 20.77 |
| 2026-08-14 | 5,808,214 | -0.3% | 234,207 | 24.80 |
| 2026-07-31 | 5,826,298 | +2.4% | 280,563 | 20.77 |
| 2026-07-15 | 5,688,384 | +9.1% | 451,434 | 12.60 |
| 2026-06-30 | 5,212,731 | +32.3% | 726,372 | 7.18 |
| 2026-06-15 | 3,940,239 | +1.9% | 251,629 | 15.66 |
| 2026-05-29 | 3,866,368 | +18.1% | 464,305 | 8.33 |
| 2026-05-15 | 3,275,227 | -1.4% | 323,701 | 10.12 |
| 2026-04-30 | 3,320,560 | +2.6% | 547,983 | 6.06 |
| 2026-04-15 | 3,237,088 | +35.2% | 446,350 | 7.25 |
| 2026-03-31 | 2,394,870 | +6.1% | 126,396 | 18.95 |
| 2026-03-13 | 2,256,471 | -3.1% | 193,141 | 11.68 |
| 2026-02-27 | 2,328,433 | -0.6% | 298,380 | 7.80 |
| 2026-02-13 | 2,341,952 | +8.4% | 281,614 | 8.32 |
| 2026-01-30 | 2,160,487 | -1.1% | 249,377 | 8.66 |
| 2026-01-15 | 2,184,668 | +18.4% | 499,934 | 4.37 |
| 2025-12-31 | 1,845,729 | +23.1% | 167,512 | 11.02 |
| 2025-12-15 | 1,499,664 | +32.8% | 208,953 | 7.18 |
| 2025-11-28 | 1,129,317 | +15.6% | 133,778 | 8.44 |
| 2025-11-14 | 976,866 | +19.8% | 117,954 | 8.28 |
| 2025-10-31 | 815,670 | +6.9% | 145,781 | 5.60 |
| 2025-10-15 | 763,171 | -31.0% | 216,551 | 3.52 |
| 2025-09-30 | 1,106,527 | +1317.2% | 527,697 | 2.10 |
| 2025-09-15 | 78,076 | +42.8% | 246,237 | 1.00 |
| 2025-08-29 | 54,659 | +25.8% | 182,283 | 1.00 |
| 2025-08-15 | 43,466 | +213.5% | 119,615 | 1.00 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 3 November 2026, the short share of BBOT volume is 34.3%, up 26.6 points over the last five sessions. Over the last 30 readings it ranged from 5.8% (1 October 2026) to 78.4% (12 October 2026). The latest reading is 10.1 points below the 30-session average of 44.5%, on 311K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-03 | 107K | 311K | 34.3% | 2,800 |
| 2026-11-02 | 115K | 212K | 54.2% | 8,530 |
| 2026-10-30 | 59K | 93K | 63.2% | 0 |
| 2026-10-29 | 43K | 112K | 38.8% | 0 |
| 2026-10-28 | 80K | 157K | 50.6% | 0 |
| 2026-10-27 | 86K | 1.1M | 7.8% | 3,311 |
| 2026-10-26 | 40K | 99K | 40.3% | 0 |
| 2026-10-23 | 47K | 356K | 13.3% | 0 |
| 2026-10-22 | 85K | 216K | 39.5% | 0 |
| 2026-10-21 | 105K | 481K | 21.9% | 0 |
| 2026-10-20 | 64K | 151K | 42.5% | 0 |
| 2026-10-19 | 48K | 421K | 11.5% | 0 |
| 2026-10-16 | 117K | 206K | 56.5% | 0 |
| 2026-10-15 | 53K | 202K | 26.2% | 0 |
| 2026-10-14 | 99K | 223K | 44.5% | 333 |
| 2026-10-13 | 163K | 219K | 74.8% | 418 |
| 2026-10-12 | 54K | 69K | 78.4% | 0 |
| 2026-10-09 | 61K | 233K | 26.3% | 0 |
| 2026-10-08 | 63K | 88K | 71.5% | 0 |
| 2026-10-07 | 66K | 131K | 50.4% | 0 |
| 2026-10-06 | 141K | 260K | 54.4% | 0 |
| 2026-10-05 | 108K | 161K | 66.6% | 0 |
| 2026-10-02 | 97K | 184K | 52.9% | 0 |
| 2026-10-01 | 62K | 1.1M | 5.8% | 0 |
| 2026-09-30 | 193K | 367K | 52.5% | 0 |
| 2026-09-29 | 63K | 173K | 36.8% | 0 |
| 2026-09-28 | 83K | 156K | 53.4% | 0 |
| 2026-09-25 | 92K | 169K | 54.8% | 0 |
| 2026-09-24 | 118K | 302K | 39.1% | 17,735 |
| 2026-09-23 | 163K | 229K | 71.0% | 13,211 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 2 October 2026, the fails-to-deliver balance in BBOT is 2,988 shares, up 1,251 shares over the last settlement date. Over the last 30 readings it ranged from 3 shares (9 September 2026) to 260,501 shares (10 July 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-02 | 2,988 | $3.94 | $12K |
| 2026-09-21 | 1,737 | $4.77 | $8K |
| 2026-09-18 | 4 | $4.89 | $20 |
| 2026-09-17 | 8,498 | $4.76 | $40K |
| 2026-09-10 | 3 | $6.76 | $20 |
| 2026-09-09 | 3 | $8.86 | $27 |
| 2026-09-03 | 12,166 | $8.89 | $108K |
| 2026-08-31 | 73 | $8.74 | $638 |
| 2026-08-28 | 81,348 | $9.18 | $747K |
| 2026-08-26 | 3,359 | $9.37 | $31K |
| 2026-08-24 | 4,524 | $9.08 | $41K |
| 2026-08-19 | 21,761 | $8.95 | $195K |
| 2026-08-18 | 12,257 | $9.04 | $111K |
| 2026-08-12 | 9,056 | $9.20 | $83K |
| 2026-08-11 | 21,404 | $9.28 | $199K |
| 2026-07-27 | 1,858 | $8.82 | $16K |
| 2026-07-24 | 25,858 | $8.72 | $225K |
| 2026-07-23 | 20,584 | $8.90 | $183K |
| 2026-07-21 | 48 | $8.42 | $404 |
| 2026-07-20 | 148 | $8.56 | $1K |
| 2026-07-17 | 39,354 | $8.31 | $327K |
| 2026-07-16 | 19,341 | $8.41 | $163K |
| 2026-07-15 | 148,616 | $8.82 | $1.3M |
| 2026-07-14 | 117,122 | $8.52 | $998K |
| 2026-07-13 | 109,045 | $8.32 | $907K |
| 2026-07-10 | 260,501 | $9.09 | $2.4M |
| 2026-07-09 | 115,210 | $9.02 | $1.0M |
| 2026-07-08 | 5,079 | $8.29 | $42K |
| 2026-07-01 | 102 | $7.62 | $777 |
| 2026-06-30 | 320 | $7.66 | $2K |
Insider trades
SEC Form 4, newest first. JSONNo open-market insider trades were reported for BBOT in the last 90 days. The most recent filings are listed below. Latest filing: Cobo Marc (Principal Accounting Officer) on 2026-10-21.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-10-21 | Cobo Marc | Principal Accounting Officer | Tax withholding | 203 | $2.68 | $544 | 14K |
| 2026-10-01 | Cobo Marc | Principal Accounting Officer | Tax withholding | 126 | $3.94 | $496 | 14K |
| 2026-10-01 | Elmelech Idan | COO & Principal Financial Ofcr | Tax withholding | 343 | $3.94 | $1K | 14K |
| 2026-10-01 | Ben Yong | Chief Med & Dev Officer | Tax withholding | 1K | $3.94 | $4K | 44K |
| 2026-10-01 | Beltran Pedro | President and CEO | Tax withholding | 1K | $3.94 | $4K | 44K |
| 2026-09-10 | Cobo Marc | Principal Accounting Officer | Tax withholding | 203 | $5.52 | $1K | 14K |
| 2026-09-10 | Cobo Marc | Principal Accounting Officer | Grant | 9K | $0.00 | $0 | 14K |
| 2026-07-01 | Chen Bihua | Director, 10% owner | Other transaction | 131K | $0.00 | $0 | 6.1M |
| 2026-07-01 | Chen Bihua | Director, 10% owner | Other transaction | 1.7M | $0.00 | $0 | 5.0M |
| 2026-07-01 | Chen Bihua | Director, 10% owner | Other transaction | 2.7M | $0.00 | $0 | 4.9M |
| 2026-07-01 | Chen Bihua | Director, 10% owner | Other transaction | 4.5M | $0.00 | $0 | 0 |
| 2026-07-01 | Cobo Marc | Principal Accounting Officer | Tax withholding | 125 | $7.80 | $975 | 5K |
| 2026-07-01 | Elmelech Idan | COO & Principal Financial Ofcr | Tax withholding | 343 | $7.80 | $3K | 14K |
| 2026-07-01 | Ben Yong | Chief Med & Dev Officer | Tax withholding | 1K | $7.80 | $8K | 45K |
| 2026-07-01 | Beltran Pedro | President and CEO | Tax withholding | 1K | $7.80 | $8K | 45K |
| 2026-04-01 | Mehra Uneek | Former Officer | Tax withholding | 524 | $9.03 | $5K | 23K |
| 2026-04-01 | Ben Yong | Chief Med & Dev Officer | Tax withholding | 1K | $9.03 | $9K | 46K |
| 2026-04-01 | Beltran Pedro | President and CEO | Tax withholding | 1K | $9.03 | $9K | 46K |
| 2026-03-10 | Mehra Uneek | Chief Financial Officer | Grant | 23K | $0.00 | $0 | 23K |
| 2026-03-10 | Ben Yong | Chief Med & Dev Officer | Grant | 47K | $0.00 | $0 | 47K |
| 2026-03-10 | Beltran Pedro | Chief Scientific Officer | Grant | 47K | $0.00 | $0 | 47K |
| 2025-10-10 | BridgeBio Pharma, Inc. | TenPercentOwner | Other transaction | 785K | price not stated in the filing | not stated | 14.6M |
| 2025-08-11 | Schmid John P. | Other | Exercise or conversion | 30K | price not stated in the filing | not stated | 30K |
| 2025-08-11 | McKenna Mark C. | Other | Exercise or conversion | 30K | price not stated in the filing | not stated | 30K |
| 2025-08-11 | Holman Albert A III | Other | Exercise or conversion | 30K | price not stated in the filing | not stated | 30K |
| 2025-08-11 | Chen Bihua | Director,TenPercentOwner | Grant | 639K | $10.72 | $6.9M | 1.5M |
| 2025-08-11 | Chen Bihua | Director,TenPercentOwner | Grant | 5.6M | $10.72 | $60.0M | 5.7M |
| 2025-08-11 | Chen Bihua | Director,TenPercentOwner | Grant | 1.9M | price not stated in the filing | not stated | 1.9M |
| 2025-08-11 | Chen Bihua | Director,TenPercentOwner | Grant | 1.8M | price not stated in the filing | not stated | 3.3M |
| 2025-08-11 | Chen Bihua | Director,TenPercentOwner | Grant | 285K | price not stated in the filing | not stated | 6.0M |
| 2025-08-11 | Chen Bihua | Director,TenPercentOwner | Grant | 760K | $10.72 | $8.2M | 2.2M |
| 2025-08-11 | Chen Bihua | Director,TenPercentOwner | Exercise or conversion | 4.2M | price not stated in the filing | not stated | 4.7M |
| 2025-08-11 | Chen Bihua | Director,TenPercentOwner | Returned to company | 153K | $0.00 | $0 | 4.5M |
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.
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON7 holders report 5% or more of BBOT in their latest filing, all on Schedule 13D (active intent). The largest reported stake is Bihua Chen at 22.3% of the class (17,878,594 shares), filed 2026-07-06 for an event on 2026-07-01.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-07-06 | 13D/Ano. 3 | Bihua Chenindividual, parent holding company | 17.9M | 22.3% | 2026-07-01 |
| 2026-07-06 | 13D/Ano. 3 | Cormorant Global Healthcare Master Fund, LPpartnership | 6.1M | 7.6% | 2026-07-01 |
| 2026-07-06 | 13D/Ano. 3 | Cormorant Global Healthcare GP, LLCpartnership | 6.1M | 7.6% | 2026-07-01 |
| 2026-07-06 | 13D/Ano. 3 | Cormorant Private Healthcare GP V, LLCpartnership | 5.0M | 6.3% | 2026-07-01 |
| 2026-07-06 | 13D/Ano. 3 | Cormorant Private Healthcare Fund V, LPpartnership | 5.0M | 6.3% | 2026-07-01 |
| 2026-07-06 | 13D/Ano. 3 | Cormorant Private Healthcare GP III, LLCpartnership | 4.9M | 6.1% | 2026-07-01 |
| 2026-07-06 | 13D/Ano. 3 | Cormorant Private Healthcare Fund III, LPpartnership | 4.9M | 6.1% | 2026-07-01 |
| 2026-07-06 | 13D/Ano. 3 | Helix Holdings II LLCother entity | 0 | 0.0% | 2026-07-01 |
| 2025-11-14 | 13G/Ano. 1 | Citadel Advisors Holdings LPparent holding company, partnership | 2.5M | 3.2% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 1 | Citadel Advisors LLCinvestment adviser, parent holding company, other entity | 2.5M | 3.2% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 1 | Citadel GP LLCparent holding company, other entity | 2.5M | 3.2% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 1 | Kenneth Griffinparent holding company, individual | 2.5M | 3.2% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 1 | Citadel Securities Group LPparent holding company, partnership | 9K | 0.0% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 1 | Citadel Securities GP LLCparent holding company, other entity | 9K | 0.0% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 1 | Citadel Securities LLCbroker-dealer, other entity | 9K | 0.0% | 2025-09-30 |
| 2025-11-13 | 13G/Ano. 1 | Phillip Grossparent holding company, individual | 1.5M | 1.9% | 2025-09-30 |
| 2025-11-13 | 13G/Ano. 1 | Adage Capital Management, L.P.investment adviser, partnership | 1.5M | 1.9% | 2025-09-30 |
| 2025-11-13 | 13G/Ano. 1 | Robert Atchinsonparent holding company, individual | 1.5M | 1.9% | 2025-09-30 |
13F holders
Tracked managers holding BBOT at their latest 13F. JSON4 of the 30 tracked managers held BBOT at their latest 13F, $21.4M in total at quarter-end prices. Citadel Advisors is the largest at $19.9M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 2 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Citadel Advisors | 2026-06-30 | 2.6M | $19.9M | 0.00% | +89K |
| Millennium Management | 2026-06-30 | 105K | $804K | 0.00% | -160K |
| Renaissance Technologies | 2026-06-30 | 59K | $447K | 0.00% | -43K |
| Two Sigma Investments | 2026-06-30 | 26K | $202K | 0.00% | new |
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.
What this page is
BridgeBio Oncology Therapeutics 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 BridgeBio Oncology Therapeutics (BBOT), SEC CIK 1869105, listed on Nasdaq. 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 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-03.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-10-02.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 2026-07-06.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
- 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 2026-08-11.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 2026-10-21.JSON and CSV
- Company record
- EDGAR filing index for CIK 1869105Ticker, 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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Datasets
Frequently Asked Questions
How much of BBOT is sold short?
What is BBOT's daily short volume?
Does BBOT have fails to deliver?
Are BBOT insiders buying or selling?
Who owns 5% or more of BBOT?
Which tracked 13F managers own BBOT?
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.