XOOMAR

Butterfly Network, Inc. (BFLY)

Every FINRA and SEC series the site collects for Butterfly Network, Inc.: short interest with days to cover, daily short sale volume, fails to deliver and Form 4 insider trades. Listed on NYSE, classified by the SEC as x-ray apparatus & tubes & related irradiation apparatus.

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32.2M

Short interest

settlement 2026-08-14

4.5

Days to cover

-1.6% vs prior

54.5%

Short share of volume

2026-09-11

672,169

Fails to deliver

settlement 2026-08-14

-$95.2M

Insider flow, 90 days

1 buys, 31 sells

As of 2026-09-11.

Short interest

FINRA, twice a month; the last 12 months shown, all 48 settlements in the JSON

As of 14 August 2026, short interest in BFLY is 32,180,029 shares, up 926,561 shares over the last month. Over the last 48 readings it ranged from 11,598,019 shares (14 March 2025) to 32,688,557 shares (31 July 2026). The latest reading sits at the top of that range. At the reported average volume of 7.2M shares a day that is 4.5 days to cover.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-08-1432,180,029-1.6%7,222,9934.46
2026-07-3132,688,557+4.6%7,599,3374.30
2026-07-1531,253,468+8.7%8,695,5753.59
2026-06-3028,743,987+11.1%16,922,4541.70
2026-06-1525,868,056-4.7%5,643,9154.58
2026-05-2927,154,629+8.8%3,781,2077.18
2026-05-1524,967,529+3.4%4,963,5555.03
2026-04-3024,143,035-3.6%6,826,2303.54
2026-04-1525,041,724-0.1%3,387,7747.39
2026-03-3125,067,630-3.2%4,465,3685.61
2026-03-1325,907,698-12.5%4,927,3715.26
2026-02-2729,599,602+18.8%11,472,8212.58
2026-02-1324,910,482+7.3%5,146,0674.84
2026-01-3023,226,604-12.9%5,200,3284.47
2026-01-1526,671,691+5.6%6,209,0154.30
2025-12-3125,251,548+6.2%4,884,7935.17
2025-12-1523,772,344+14.4%4,811,8994.94
2025-11-2820,770,733+16.6%8,005,1922.59
2025-11-1417,820,014+1.4%7,324,4802.43
2025-10-3117,579,792-3.9%5,279,5043.33
2025-10-1518,294,228-7.6%8,272,1592.21
2025-09-3019,803,728+4.6%7,510,1202.64
2025-09-1518,933,981-0.2%2,216,7888.54
2025-08-2918,977,058-7.2%3,574,8545.31

Daily short volume

FINRA Reg SHO, last 60 sessions. JSON

As of 11 September 2026, the short share of BFLY volume is 54.5%, down 6.5 points over the last five sessions. Over the last 52 readings it ranged from 36.6% (30 June 2026) to 81.0% (21 July 2026). The latest reading is in line with the 30-session average of 53.3%, on 1.5M shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-09-11830K1.5M54.5%1,517
2026-09-10503K1.1M45.6%51
2026-09-09880K1.6M56.4%1,551
2026-09-08545K1.2M45.6%7,081
2026-09-04682K1.3M53.8%14,992
2026-09-03985K1.6M61.0%2,841
2026-09-021.2M1.9M61.6%190
2026-09-011.0M1.8M55.9%2,455
2026-08-311.0M2.1M49.5%20,557
2026-08-28913K1.9M48.4%43,077
2026-08-271.0M2.1M49.2%3,647
2026-08-26818K1.8M44.4%6,739
2026-08-25860K1.9M45.9%104,896
2026-08-241.1M2.5M42.5%109,054
2026-08-211.2M2.3M50.0%10,482
2026-08-201.0M1.8M56.3%10,965
2026-08-19780K1.5M53.6%2,246
2026-08-181.0M1.8M57.4%6,699
2026-08-17975K1.3M73.3%331,994
2026-08-141.2M2.1M55.6%181,888
2026-08-131.6M2.8M56.0%184,025
2026-08-12813K1.5M52.8%178
2026-08-111.2M2.1M57.4%4,178
2026-08-102.7M5.7M47.3%8,853
2026-08-071.1M1.9M55.1%0
2026-08-06690K1.3M53.2%211
2026-08-051.2M2.3M55.1%8,757
2026-08-042.4M4.7M52.1%19,201
2026-08-032.5M5.0M50.1%221,810
2026-07-312.7M4.6M58.8%538,640

Fails to deliver

SEC, by settlement date. JSON

As of 14 August 2026, the fails-to-deliver balance in BFLY is 672,169 shares, up 672,139 shares over the last settlement date. Over the last 52 readings it ranged from 30 shares (12 August 2026) to 4,914,298 shares (23 July 2026).

SettlementShares failedPriceValue
2026-08-14672,169$8.86$6.0M
2026-08-1230$9.37$281
2026-08-102,410$8.83$21K
2026-08-07230,195$8.30$1.9M
2026-08-041,395,935$8.22$11.5M
2026-08-031,182,600$7.11$8.4M
2026-07-29496,496$7.17$3.6M
2026-07-28523,633$7.07$3.7M
2026-07-272,473,687$6.58$16.3M
2026-07-242,482,960$6.62$16.4M
2026-07-234,914,298$6.61$32.5M
2026-07-224,269,476$6.82$29.1M
2026-07-213,537,146$6.69$23.7M
2026-07-202,732,627$6.62$18.1M
2026-07-172,501,922$7.01$17.5M
2026-07-161,745,295$7.30$12.7M
2026-07-1082$8.02$658
2026-07-086,914$7.58$52K
2026-07-0610,263$7.68$79K
2026-07-024,345$7.93$34K
2026-06-2627,238$8.02$218K
2026-06-2532,267$7.77$251K
2026-06-22182,112$8.90$1.6M
2026-06-18130,350$5.71$744K
2026-06-11307$5.39$2K
2026-06-101,640$5.12$8K
2026-06-02162$4.60$745
2026-04-3051$4.92$251
2026-04-292,426$5.16$13K
2026-04-289,051$5.48$50K

Insider trades

SEC Form 4, newest first, 50 of 100 shown. JSON

Over the last 90 days BFLY insiders reported 1 open-market buy ($1000K) against 31 sells ($96.2M), so the dollar flow leans toward selling. Latest filing: Cashman Steve (Chief Business Officer) on 2026-09-04.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-09-04Cashman SteveChief Business OfficerSell140K$7.30$1.0M1.5M
2026-09-04Carlson MeganCAO and SVP, FinanceSell14K$7.30$101K412K
2026-09-02Caezza NicholasDeputy General CounselSell2K$8.15$14K305K
2026-08-24DEVIVO JOSEPHPresident &amp; CEOGift250K$0.00$07.4M
2026-08-17ROBBINS LARRYn/aSell583K$8.97$5.2M3.0M
2026-08-14Phanstiel S. Louisen/aBuy115K$8.68$1000K300K
2026-08-14ROBBINS LARRYn/aSell825K$8.70$7.2M3.5M
2026-08-13ROBBINS LARRYn/aSell175K$8.86$1.6M4.4M
2026-08-13ROBBINS LARRYn/aSell500K$9.24$4.6M11.7M
2026-08-13ROBBINS LARRYn/aSell215K$9.54$2.1M12.2M
2026-08-11Caezza NicholasDeputy General CounselSell10K$9.75$98K300K
2026-08-10DEVIVO JOSEPHPresident &amp; CEOSell68K$10.01$684K7.6M
2026-08-03ROBBINS LARRYn/aSell156K$8.10$1.3M12.5M
2026-07-31Carlson MeganCAO and SVP, FinanceSell69K$7.86$541K426K
2026-07-31ROBBINS LARRYn/aSell1.7M$7.39$12.7M12.6M
2026-07-22ROTHBERG JONATHAN Mn/aSell36K$6.47$235K0
2026-07-22ROTHBERG JONATHAN Mn/aSell497K$6.47$3.2M0
2026-07-22ROTHBERG JONATHAN Mn/aSell73K$6.47$471K0
2026-07-22ROTHBERG JONATHAN Mn/aSell54K$6.47$350K0
2026-07-21ROTHBERG JONATHAN Mn/aSell753K$6.74$5.1M497K
2026-07-20Ku VictorChief Technology OfficerSell49K$6.56$318K1.0M
2026-07-20Doherty John N.EVP, CFOSell57K$6.56$375K1.4M
2026-07-20DEVIVO JOSEPHPresident &amp; CEOSell212K$6.56$1.4M7.7M
2026-07-20ROTHBERG JONATHAN Mn/aSell1.2M$6.61$7.8M73K
2026-07-17ROTHBERG JONATHAN Mn/aSell1.2M$6.60$7.9M54K
2026-07-16ROTHBERG JONATHAN Mn/aSell1.2M$7.09$8.6M36K
2026-07-16ROTHBERG JONATHAN Mn/aSell254K$7.09$1.8M106K
2026-07-15ROTHBERG JONATHAN Mn/aSell1.7M$7.32$12.7M360K
2026-07-14ROTHBERG JONATHAN Mn/aSell816K$7.72$6.3M2.1M
2026-07-07Ku VictorChief Technology OfficerSell36K$7.87$281K1.1M
2026-07-07Doherty John N.EVP, CFOSell55K$7.87$435K1.5M
2026-07-07DEVIVO JOSEPHPresident &amp; CEOSell205K$7.87$1.6M7.9M
2026-07-02Carlson MeganCAO and SVP, FinanceSell41K$7.96$329K466K
2026-06-08Cashman SteveChief Business OfficerSell295K$4.66$1.4M1.6M
2026-06-05Cashman SteveChief Business OfficerSell105K$4.96$520K1.9M
2026-06-02Caezza NicholasDeputy General CounselSell2K$4.52$8K310K
2026-05-19Neubauer Caroll Hn/aGrant73K$0.00$073K
2026-05-01Carlson MeganCAO and SVP, FinanceSell110K$4.75$524K507K
2026-04-29Cashman SteveChief Business OfficerSell148K$4.91$724K2.0M
2026-04-16Cashman SteveChief Business OfficerSell200K$5.22$1.0M2.2M
2026-03-05DEVIVO JOSEPHPresident &amp; CEOSell482K$3.71$1.8M8.0M
2026-03-03Cashman SteveChief Business OfficerSell43K$3.71$158K2.4M
2026-03-03DEVIVO JOSEPHPresident &amp; CEOSell161K$3.71$599K8.5M
2026-03-03Caezza NicholasDeputy General CounselSell14K$3.71$53K312K
2026-03-03Carlson MeganCAO and SVP, FinanceSell42K$3.71$156K618K
2026-03-02Doherty John N.EVP, CFOGrant275K$0.00$01.5M
2026-03-02Ku VictorChief Technology OfficerGrant287K$0.00$01.1M
2026-03-02Cashman SteveChief Business OfficerGrant488K$0.00$02.4M
2026-03-02DEVIVO JOSEPHPresident &amp; CEOGrant1.4M$0.00$08.7M
2026-03-02Caezza NicholasDeputy General CounselGrant89K$0.00$0326K

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 the rarer, stronger signal.

Planned sales (Form 144)

Newest first. JSON

19 Form 144 notices on file for BFLY worth $72.3M at the prices reported; 19 in the last 90 days worth $72.3M. Latest: Cashman Steve filed on 2026-09-04 to sell 140,112 shares ($1.0M) from 2026-09-04.

FiledSellerSharesMarket valueOf outstandingSale fromBroker
2026-09-04Cashman SteveOfficer140K$1.0M0.057%2026-09-04Fidelity Brokerage Services LLC
2026-09-04Carlson MeganOfficer14K$101K0.006%2026-09-04Fidelity Brokerage Services LLC
2026-09-02Caezza NicholasOfficer2K$14K0.001%2026-09-02Fidelity Brokerage Services LLC
2026-08-11Caezza NicholasOfficer10K$98K0.004%2026-08-11Fidelity Brokerage Services LLC
2026-08-10Carfora DawnOfficer9K$86K0.004%2026-08-10Merrill Lynch
2026-08-10DEVIVO JOSEPHOfficer, Director68K$684K0.028%2026-08-10Fidelity Brokerage Services LLC
2026-07-31Carlson MeganOfficer69K$541K0.028%2026-07-31Fidelity Brokerage Services LLC
2026-07-31ROBBINS LARRYDirector1.9M$13.3M0.766%2026-07-31Cantor Fitzgerald & Co.
2026-07-22ROTHBERG JONATHAN MDirector660K$4.3M0.281%2026-07-22Jefferies
2026-07-21ROTHBERG JONATHAN MDirector753K$5.1M0.320%2026-07-21Jefferies
2026-07-20ROTHBERG JONATHAN MDirector1.2M$7.8M0.501%2026-07-20Jefferies LLC
2026-07-20Doherty John N.Officer1$70.000%2026-07-20Fidelity Brokerage Services LLC
2026-07-20DEVIVO JOSEPHOfficer, Director212K$1.4M0.090%2026-07-20Fidelity Brokerage Services LLC
2026-07-20Doherty John N.Officer57K$375K0.024%2026-07-20Fidelity Brokerage Services LLC
2026-07-20Ku VictorOfficer49K$318K0.021%2026-07-20Fidelity Brokerage Services LLC
2026-07-17ROTHBERG JONATHAN MDirector1.2M$7.9M0.508%2026-07-17Jefferies LLC
2026-07-16ROTHBERG JONATHAN MDirector1.5M$10.4M0.624%2026-07-16Jefferies LLC
2026-07-15ROTHBERG JONATHAN MDirector1.7M$12.7M0.736%2026-07-15Jefferies LLC
2026-07-14ROTHBERG JONATHAN MDirector816K$6.3M0.347%2026-07-14Jefferies

Large holders (13D and 13G)

One row per reporting person, newest filing first. JSON

8 holders above 5% have filed on BFLY, 8 on Schedule 13D (active intent). The largest reported stake is 4C Holdings V, LLC at 41.3% of the class (8,845,238 shares), filed 2026-08-17 for an event on 2026-08-14.

FiledFormHolderSharesOf classEvent
2026-08-1713D/Ano. 124C Holdings V, LLCother entity8.8M41.3%2026-08-14
2026-08-1713D/Ano. 124C Holdings I, LLCother entity4.7M22.0%2026-08-14
2026-08-1713D/Ano. 124C Holdings II, LLCother entity2.6M12.2%2026-08-14
2026-08-1713D/Ano. 124C Holdings IV, LLCother entity2.6M12.2%2026-08-14
2026-08-1713D/Ano. 124C Holdings III, LLCother entity2.6M12.2%2026-08-14
2026-08-1713D/Ano. 8ROBBINS LARRYindividual, parent holding company15.1M6.2%2026-08-13
2026-08-1713D/Ano. 8GLENVIEW CAPITAL MANAGEMENT, LLCother entity11.7M4.8%2026-08-13
2026-08-1713D/Ano. 12Rothberg Jonathan M.individual829K0.3%2026-08-14
2026-07-2113D/Ano. 114C Holdings V, LLCother entity8.8M40.0%2026-07-21
2026-07-2113D/Ano. 114C Holdings I, LLCother entity4.7M21.4%2026-07-21
2026-07-2113D/Ano. 114C Holdings IV, LLCother entity2.6M11.9%2026-07-21
2026-07-2113D/Ano. 114C Holdings II, LLCother entity2.6M11.9%2026-07-21
2026-07-2113D/Ano. 114C Holdings III, LLCother entity2.6M11.9%2026-07-21
2026-07-2113D/Ano. 11Rothberg Jonathan M.individual829K0.4%2026-07-21
2026-07-1713D/Ano. 104C Holdings V, LLCother entity8.8M35.1%2026-07-15
2026-07-1713D/Ano. 104C Holdings I, LLCother entity4.7M18.7%2026-07-15
2026-07-1713D/Ano. 104C Holdings IV, LLCother entity2.6M10.4%2026-07-15
2026-07-1713D/Ano. 104C Holdings III, LLCother entity2.6M10.4%2026-07-15
2026-07-1713D/Ano. 104C Holdings II, LLCother entity2.6M10.4%2026-07-15
2026-07-1713D/Ano. 10Rothberg Jonathan M.individual829K0.4%2026-07-15

13F holders

Tracked managers holding BFLY at their latest 13F. JSON

7 of the 30 tracked managers held BFLY at their latest 13F, $133.6M in total at quarter-end prices. D. E. Shaw & Co. is the largest at $53.8M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 2 cut.

FundQuarterSharesValueOf portfolioChange in shares
D. E. Shaw & Co.2026-06-306.4M$53.8M0.03%+5.3M
ARK Investment Management2026-06-305.1M$42.8M0.28%-142K
Millennium Management2026-06-302.2M$18.3M0.01%new or n/a
Two Sigma Investments2026-06-301.4M$11.6M0.01%+616K
Citadel Advisors2026-06-30669K$5.6M0.00%+176K
Renaissance Technologies2026-06-3094K$790K0.00%-412K
AQR Capital Management2026-06-3078K$658K0.00%+18K

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. JSON

In Q2 2026 (quarter ended 2026-06-30) Butterfly Network, Inc. reported revenue of $32.6M, up 39.5% from the same quarter a year earlier, and net loss of $12.9M (-0.05 diluted EPS). In FY 2025 it generated -$12.7M of operating cash flow.

Cash
$124.7M
Equity
$189.4M
Total assets
$283.0M

Quarterly, last 8 quarters

QuarterPeriod endRevenueNet incomeMarginDiluted EPS
Q2 20262026-06-30$32.6M-$12.9M-39.6%-0.05
Q1 20262026-03-31$26.5M-$12.7M-47.8%-0.05
Q4 2025derived2025-12-31$31.5Mn/an/an/a
Q3 20252025-09-30$21.5M-$34.0M-158.1%-0.13
Q2 20252025-06-30$23.4M-$13.8M-59.2%-0.06
Q1 20252025-03-31$21.2M-$14.0M-65.8%-0.06
Q4 2024derived2024-12-31$22.4Mn/an/an/a
Q3 20242024-09-30$20.6M-$16.9M-82.3%-0.08

Fiscal years, with buybacks and dividends

Fiscal yearEndsRevenueNet incomeOperating cash flowCapexBuybacksDividends
FY 20252025-12-31$97.6Mn/a-$12.7M$3.3Mn/an/a
FY 20242024-12-31$82.1Mn/a-$41.7M$2.7Mn/an/a
FY 20232023-12-31$65.9Mn/a-$98.8M$5.8Mn/an/a
FY 20222022-12-31$73.4M-$168.7M-$169.1M$18.3Mn/an/a
FY 20212021-12-31$62.6M-$32.4M-$189.2M$7.9Mn/an/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 cash paid to repurchase common stock in the year (XBRL PaymentsForRepurchaseOfCommonStock), not authorizations. Balance sheet lines are as of 2026-06-30.

What this page is

Butterfly Network, Inc. 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 pulls every series the site collects for one ticker onto one URL, keyed by the SEC's own ticker list, 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 summary sentence built from the rows (last value, change, range with dates) and its own JSON and CSV links. Nothing on the page is written by a model; the sentences change only when the data does. A page exists only for companies with data in at least two series, and every section says when its source last updated.

This page follows Butterfly Network, Inc. (BFLY), SEC CIK 1804176, listed on NYSE, classified by the SEC as x-ray apparatus & tubes & related irradiation apparatus. The cross-market tables live on the short interest and insider transactions hubs.

Source and method

Short interest
FINRA consolidated short interestTwice a month, about eight business days after settlement. Latest 2026-08-14.JSON and CSV
Daily short volume
FINRA Reg SHO daily filesEvery trading day, loaded the following morning. Latest 2026-09-11.JSON and CSV
Fails to deliver
SEC fails-to-deliver dataTwice a month, a few weeks after the half month ends. Latest 2026-08-14.JSON and CSV
Planned sales
SEC EDGAR Form 144EDGAR read every 30 minutes; a notice is filed on or before the sell order. Latest 2026-09-04.JSON and CSV
Large holders
SEC EDGAR Schedule 13D and 13GEDGAR read every 30 minutes; 13D within five business days of crossing 5%, 13G on the passive schedule. Latest 2026-08-17.JSON and CSV
13F holders
SEC EDGAR Form 13F-HRQuarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
Financials
SEC XBRL company factsRefreshed weekly from the SEC's structured data; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
Insider trades
SEC EDGAR Form 4EDGAR read every 30 minutes; filings are due two business days after the trade. Latest 2026-09-04.JSON and CSV
Company record
EDGAR filing index for CIK 1804176Ticker, name and exchange from the SEC's company list, refreshed weekly.
Rate limits
30 requests a minute without a key, 120 a minute with a key from a free account.

Data checks. Every dataset is checked against its source once a day. This dataset passed the last run, 13 Sep 05:40 UTC.

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 crowded short are the combination that has historically preceded squeezes; insider sells next to a crowded short 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.

Datasets

Frequently Asked Questions

How much of BFLY is sold short?
32,180,029 shares were held short at the 2026-08-14 settlement, 4.5 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is BFLY's daily short volume?
On 2026-09-11, 829,783 of the 1,523,392 BFLY shares reported to FINRA were sold short, 54.5% of the day's reported volume. Short volume is a flow for one day, not a position.
Does BFLY have fails to deliver?
The SEC's latest file shows 672,169 BFLY shares failed to deliver at settlement 2026-08-14. Fails are reported per settlement date and published twice a month with a lag.
Are BFLY insiders buying or selling?
Over the last 90 days BFLY insiders reported 1 open-market buy ($1000K) against 31 sells ($96.2M), so the dollar flow leans toward selling. Latest filing: Cashman Steve (Chief Business Officer) on 2026-09-04.
Have BFLY insiders filed to sell?
19 Form 144 notices on file for BFLY worth $72.3M at the prices reported; 19 in the last 90 days worth $72.3M. Latest: Cashman Steve filed on 2026-09-04 to sell 140,112 shares ($1.0M) from 2026-09-04.
Who owns more than 5% of BFLY?
8 holders above 5% have filed on BFLY, 8 on Schedule 13D (active intent). The largest reported stake is 4C Holdings V, LLC at 41.3% of the class (8,845,238 shares), filed 2026-08-17 for an event on 2026-08-14.
What did BFLY report last quarter?
In Q2 2026 (quarter ended 2026-06-30) Butterfly Network, Inc. reported revenue of $32.6M, up 39.5% from the same quarter a year earlier, and net loss of $12.9M (-0.05 diluted EPS). In FY 2025 it generated -$12.7M of operating cash flow.
Which funds hold BFLY?
7 of the 30 tracked managers held BFLY at their latest 13F, $133.6M in total at quarter-end prices. D. E. Shaw & Co. is the largest at $53.8M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 2 cut.

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