XOOMAR

Alumis (ALMS)

Alumis on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as pharmaceutical preparations.

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10.3M

Short interest

settlement 2026-09-30

3.6

Days to cover

+2.6 days vs prior

41.1%

Short share of volume

2026-10-09

291,588

Fails to deliver

settlement 2026-09-08

Thu 12 Nov

Next earnings

estimated date

$9.3M

Insider flow, 90 days

4 buys, 8 sells

As of 2026-10-09.

Short interest

FINRA, twice a month. The newest 24 settlements in the table, 48 in the chart. JSON

As of 30 September 2026, short interest in ALMS is 10,295,705 shares, up 4,649,952 shares over the last month. Over the last 48 readings it ranged from 1,853,671 shares (15 August 2025) to 14,294,503 shares (30 June 2026). At the reported average volume of 2.9M shares a day that is 3.6 days to cover.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-09-3010,295,705+63.5%2,869,5473.59
2026-09-156,299,106+11.6%7,177,8241.00
2026-08-315,645,753-3.6%798,9567.07
2026-08-145,853,901+1.5%897,5576.52
2026-07-315,766,070-14.8%943,0996.11
2026-07-156,764,417-52.7%1,774,5383.81
2026-06-3014,294,503+12.9%1,889,8837.56
2026-06-1512,658,548+14.3%1,454,6058.70
2026-05-2911,072,158-2.5%853,93812.97
2026-05-1511,359,303+0.6%806,69114.08
2026-04-3011,287,439-7.6%1,252,2909.01
2026-04-1512,210,305+8.7%1,247,2909.79
2026-03-3111,230,693+25.3%2,042,7255.50
2026-03-138,963,277+12.7%1,205,2397.44
2026-02-277,953,241-12.2%1,322,6256.01
2026-02-139,054,577+4.4%1,187,2377.63
2026-01-308,670,302-0.0%1,954,8074.44
2026-01-158,672,088+93.0%10,417,0531.00
2025-12-314,492,125+15.9%951,9524.72
2025-12-153,874,655+9.6%1,455,1192.66
2025-11-283,533,932+0.1%1,323,3062.67
2025-11-143,531,192+25.6%1,029,5233.43
2025-10-312,812,394+33.3%471,8865.96
2025-10-152,110,101-25.9%766,5522.75

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 9 October 2026, the short share of ALMS volume is 41.1%, up 0.1 points over the last five sessions. Over the last 30 readings it ranged from 15.1% (11 September 2026) to 70.6% (31 August 2026). The latest reading is 4.0 points above the 30-session average of 37.1%, on 404K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-10-09166K404K41.1%0
2026-10-08219K772K28.4%11
2026-10-07188K649K28.9%2,119
2026-10-06197K663K29.7%1,427
2026-10-05543K974K55.7%0
2026-10-02381K926K41.1%1,052
2026-10-01262K710K36.8%200
2026-09-30208K456K45.5%0
2026-09-29223K508K43.9%0
2026-09-28301K883K34.0%22
2026-09-25305K710K42.9%0
2026-09-24371K915K40.5%0
2026-09-23379K934K40.6%0
2026-09-22363K759K47.8%0
2026-09-21419K920K45.6%0
2026-09-18290K1.1M27.1%0
2026-09-17722K1.6M46.2%0
2026-09-16313K1.7M18.1%11
2026-09-15815K1.9M43.7%7,809
2026-09-14292K1.4M20.8%6,679
2026-09-11225K1.5M15.1%1,500
2026-09-10676K2.1M32.1%5,176
2026-09-09487K1.9M26.2%1,300
2026-09-08645K2.1M31.0%0
2026-09-04392K1.2M31.4%1,886
2026-09-03750K3.0M24.6%0
2026-09-02880K4.2M20.8%68,217
2026-09-014.9M13.3M37.1%684,348
2026-08-31347K492K70.6%71,344
2026-08-28148K227K65.4%35,822

Fails to deliver

SEC, the last 30 settlement dates with a fail. JSON

As of 8 September 2026, the fails-to-deliver balance in ALMS is 291,588 shares, down 99,157 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (23 June 2026) to 390,745 shares (2 September 2026).

SettlementShares failedPriceValue
2026-09-08291,588$11.10$3.2M
2026-09-02390,745$9.47$3.7M
2026-08-1124$27.53$661
2026-07-171$27.23$27
2026-07-143$28.10$84
2026-07-029,494$26.64$253K
2026-07-01124,360$28.14$3.5M
2026-06-303$27.14$81
2026-06-2910,546$26.40$278K
2026-06-252$24.85$50
2026-06-247$24.51$172
2026-06-231$24.60$25
2026-06-15302$24.15$7K
2026-06-113$20.06$60
2026-06-1048$20.01$960
2026-05-2240,000$22.17$887K
2026-05-19100$21.15$2K
2026-05-142,347$24.86$58K
2026-05-047$25.18$176
2026-04-24375$25.99$10K
2026-04-209,858$24.99$246K
2026-03-30140$24.80$3K
2026-03-2540$23.07$923
2026-03-2423$23.36$537
2026-03-0982$26.90$2K
2026-03-0477$28.15$2K
2026-02-27823$29.98$25K
2026-02-20128$29.21$4K
2026-02-1323,629$26.80$633K
2026-02-06212$26.34$6K

Insider trades

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

Over the last 90 days ALMS insiders reported 4 open-market buys ($10.7M) against 8 sells ($1.4M), so the dollar flow leans toward buying. Latest filing: AKKARAJU SRINIVAS (Director) on 2026-09-08.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-09-08AKKARAJU SRINIVASDirectorBuy273K$10.63$2.9M2.3M
2026-09-08AKKARAJU SRINIVASDirectorBuy273K$10.63$2.9M4.9M
2026-09-08AKKARAJU SRINIVASDirectorSell48K$10.55$507K2.0M
2026-09-08AKKARAJU SRINIVASDirectorSell48K$10.55$507K4.7M
2026-09-04AKKARAJU SRINIVASDirectorBuy220K$11.17$2.5M2.1M
2026-09-04AKKARAJU SRINIVASDirectorBuy220K$11.17$2.5M4.7M
2026-08-03Pangali SanamChief Legal OfficerSell1K$26.37$36K10K
2026-08-03Bradley Mark ChristopherChief Development OfficerSell3K$26.37$68K49K
2026-08-03Drappa JornChief Medical OfficerSell2K$26.37$65K57K
2026-08-03Goldstein David MChief Scientific OfficerSell3K$26.37$68K31K
2026-08-03Schroer John R.Chief Financial OfficerSell3K$26.37$87K25K
2026-08-03Hardiman Roy C.Chief Business & Strategy OfcrSell3K$26.37$71K208K
2026-07-06Pangali SanamChief Legal OfficerSell5K$28.00$140K11K
2026-07-06Pangali SanamChief Legal OfficerOption exercise5K$5.06$25K16K
2026-06-30TETRAULT LYNN A.DirectorGrant4K$0.00$04K
2026-06-30Srivastava SapnaDirectorGrant4K$0.00$04K
2026-06-30Yao ZhengbinDirectorGrant4K$0.00$027K
2026-06-30Machado PatrickDirectorGrant4K$0.00$04K
2026-06-30AKKARAJU SRINIVASDirectorGrant4K$0.00$04K
2026-05-22Drappa JornChief Medical OfficerOption exercise16K$5.06$79K59K
2026-05-22Drappa JornChief Medical OfficerOption exercise11K$8.84$100K44K
2026-04-01Foresite Capital Management VI LLC10% ownerJ1.1M$0.00$00
2026-04-01Tananbaum James B.Director, 10% ownerJ1.1M$0.00$00
2026-04-01Foresite Labs Affiliates 2021, LLCTenPercentOwnerJ1.2M$0.00$00
2026-04-01Foresite Labs Affiliates 2021, LLCTenPercentOwnerJ680K$0.00$0680K
2026-04-01Foresite Labs Affiliates 2021, LLCTenPercentOwnerJ1.1M$0.00$01.1M
2026-04-01Foresite Labs, LLC10% ownerJ680K$0.00$0680K
2026-04-01Foresite Labs, LLC10% ownerJ1.1M$0.00$01.1M
2026-04-01Foresite Labs, LLC10% ownerJ1.2M$0.00$00
2026-04-01Foresite Capital Management VI LLC10% ownerJ680K$0.00$0680K
2026-04-01Foresite Capital Management VI LLC10% ownerJ1.1M$0.00$01.1M
2026-04-01Foresite Capital Management VI LLC10% ownerJ1.2M$0.00$00
2026-04-01Tananbaum James B.Director, 10% ownerJ680K$0.00$0680K
2026-04-01Tananbaum James B.Director, 10% ownerJ1.1M$0.00$01.1M
2026-04-01Tananbaum James B.Director, 10% ownerJ1.2M$0.00$00
2026-01-09AKKARAJU SRINIVASDirectorBuy588K$17.00$10.0M1.9M
2026-01-08Foresite Labs Fund I, L.P.TenPercentOwnerBuy294K$17.00$5.0M2.9M
2026-01-08Foresite Labs Fund I, L.P.TenPercentOwnerBuy118K$17.00$2.0M5.7M
2026-01-08Foresite Labs, LLC10% ownerBuy294K$17.00$5.0M2.9M
2026-01-08Foresite Labs, LLC10% ownerBuy118K$17.00$2.0M5.7M
2026-01-08Foresite Capital Management VI LLC10% ownerBuy294K$17.00$5.0M2.9M
2026-01-08Foresite Capital Management VI LLC10% ownerBuy118K$17.00$2.0M5.7M
2026-01-08Tananbaum James B.Director, 10% ownerBuy294K$17.00$5.0M2.9M
2026-01-08Tananbaum James B.Director, 10% ownerBuy118K$17.00$2.0M5.7M
2025-12-05AKKARAJU SRINIVASDirectorBuy51K$10.73$551K1.3M
2025-12-05AKKARAJU SRINIVASDirectorBuy70K$10.01$701K1.2M
2025-12-05AKKARAJU SRINIVASDirectorBuy65K$8.95$581K1.1M
2025-12-04AKKARAJU SRINIVASDirectorBuy66K$8.18$540K1.1M
2025-12-03AKKARAJU SRINIVASDirectorBuy100K$7.75$775K1.0M
2025-12-02AKKARAJU SRINIVASDirectorBuy96K$7.55$725K913K

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. JSON

1 Form 144 notice on file for ALMS worth $140K at the prices reported; 0 in the last 90 days worth $0. Latest: SANAMPREET PANGALI filed on 2026-07-06 to sell 5,000 shares ($140K) from 2026-07-06.

FiledSellerSharesMarket valueOf outstandingSale fromBroker
2026-07-06SANAMPREET PANGALIOfficer5K$140K0.004%2026-07-06Morgan Stanley Smith Barney LLC Executive Financial Services

Large holders (13D and 13G)

One row per reporting person with its latest filing, newest first. JSON

14 holders report 5% or more of ALMS in their latest filing, 8 on Schedule 13D (active intent). The largest reported stake is James B. Tananbaum at 14.5% of the class (9,181,328 shares), filed 2026-08-17 for an event on 2026-08-10.

FiledFormHolderSharesOf classEvent
2026-08-1713DJames B. Tananbaumindividual9.2M14.5%2026-08-10
2026-08-1713DForesite Capital Fund V, L.P.partnership3.6M5.6%2026-08-10
2026-08-1713DForesite Capital Management V, LLCother entity3.6M5.6%2026-08-10
2026-08-1713DForesite Capital Opportunity Fund V, L.P.partnership3.4M5.4%2026-08-10
2026-08-1713DForesite Capital Opportunity Management V, LLCother entity3.4M5.4%2026-08-10
2026-08-1713DForesite Capital Management VI, LLCother entity2.2M3.5%2026-08-10
2026-08-1713DForesite Capital Fund VI LPpartnership2.2M3.5%2026-08-10
2026-08-0613GFMR LLCparent holding company6.8M5.5%2026-06-30
2026-08-0613GAbigail P. Johnsonindividual6.8M5.5%2026-06-30
2026-07-2713GBlackRock, Inc.parent holding company7.1M5.7%2026-06-30
2026-07-0213D/Ano. 3David E. Goelindividual, parent holding company15.1M12.3%2026-05-14
2026-07-0213D/Ano. 3AyurMaya Capital Management Company, LPinvestment adviser, partnership15.1M12.3%2026-05-14
2026-04-0713GDeep Track Capital, LPinvestment adviser, other entity7.4M6.0%2026-03-30
2026-04-0713GDeep Track Biotechnology Master Fund, Ltd.corporation7.4M6.0%2026-03-30
2026-04-0713GDavid Kroinparent holding company, individual7.4M6.0%2026-03-30
2026-04-0313D/Ano. 4Foresite Labs Fund I, L.P.partnership2.0M1.6%2026-04-01
2026-04-0313D/Ano. 4Foresite Labs Management I, LLCother entity2.0M1.6%2026-04-01
2026-04-0313D/Ano. 4Labs Co-Invest V, LLCother entity194K0.2%2026-04-01
2026-04-0313D/Ano. 4Foresite Labs, LLCother entity00.0%2026-04-01
2026-04-0313D/Ano. 4Foresite Labs Affiliates 2021, LLCother entity00.0%2026-04-01
2026-01-1313D/Ano. 1Srinivas Akkarajuindividual6.3M5.4%2026-01-09
2026-01-1313D/Ano. 1Samsara BioCapital GP, LLCother entity4.5M3.8%2026-01-09
2026-01-1313D/Ano. 1Samsara BioCapital, L.P.partnership4.5M3.8%2026-01-09
2026-01-1313D/Ano. 1Samsara Opportunity Fund GP, LLCother entity1.9M1.6%2026-01-09
2026-01-1313D/Ano. 1Samsara Opportunity Fund, L.P.partnership1.9M1.6%2026-01-09
2025-11-1713G/Ano. 1GOODMAN COREY Sindividual, parent holding company4.6M4.8%2025-06-30
2025-11-1713G/Ano. 1venBio Global Strategic Fund IV, L.P.partnership4.6M4.8%2025-06-30
2025-11-1713G/Ano. 1venBio Global Strategic GP IV, LLCother entity, parent holding company4.6M4.8%2025-06-30
2025-11-1713G/Ano. 1Adelman Robert Jindividual, parent holding company4.6M4.8%2025-06-30

13F holders

Tracked managers holding ALMS at their latest 13F. JSON

5 of the 30 tracked managers held ALMS at their latest 13F, $61.2M in total at quarter-end prices. D. E. Shaw & Co. is the largest at $27.2M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 3 cut.

FundQuarterSharesValueOf portfolioChange in shares
D. E. Shaw & Co.2026-06-30968K$27.2M0.01%+396K
Millennium Management2026-06-30660K$18.6M0.01%+54K
Two Sigma Investments2026-06-30376K$10.6M0.01%-282K
AQR Capital Management2026-06-30146K$4.1M0.00%-245
Renaissance Technologies2026-06-3023K$657K0.00%-52K

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

Alumis 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 Alumis (ALMS), SEC CIK 1847367, listed on Nasdaq, classified by the SEC as pharmaceutical preparations. 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 2026-10-09.JSON and CSV
Fails to deliver
SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-08.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 2026-07-06.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 2026-08-17.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 2026-05-14.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 2026-09-08.JSON and CSV
Company record
EDGAR filing index for CIK 1847367Ticker, 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.

Datasets

Frequently Asked Questions

How much of ALMS is sold short?
10,295,705 shares were held short at the 2026-09-30 settlement, 3.6 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 ALMS's daily short volume?
On 2026-10-09, 166,311 of the 404,248 ALMS shares reported to FINRA were sold short, 41.1% of the day's reported volume. Short volume is a flow for one day, not a position.
Does ALMS have fails to deliver?
The SEC's latest file shows 291,588 ALMS shares failed to deliver at settlement 2026-09-08. Fails are reported per settlement date and published twice a month with a lag.
Are ALMS insiders buying or selling?
Over the last 90 days ALMS insiders reported 4 open-market buys ($10.7M) against 8 sells ($1.4M), so the dollar flow leans toward buying. Latest filing: AKKARAJU SRINIVAS (Director) on 2026-09-08.
Have ALMS insiders filed to sell?
1 Form 144 notice on file for ALMS worth $140K at the prices reported; 0 in the last 90 days worth $0. Latest: SANAMPREET PANGALI filed on 2026-07-06 to sell 5,000 shares ($140K) from 2026-07-06.
Who owns 5% or more of ALMS?
14 holders report 5% or more of ALMS in their latest filing, 8 on Schedule 13D (active intent). The largest reported stake is James B. Tananbaum at 14.5% of the class (9,181,328 shares), filed 2026-08-17 for an event on 2026-08-10.
Which tracked 13F managers own ALMS?
5 of the 30 tracked 13F managers held ALMS shares at their latest filing, $61.2M in all. The largest: D. E. Shaw & Co. (968K shares, $27.2M), Izzy Englander's Millennium Management (660K shares, $18.6M), Two Sigma Investments (376K shares, $10.6M), Cliff Asness's AQR Capital Management (146K shares, $4.1M), Renaissance Technologies (23K shares, $657K).

Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.