XOOMAR

Scholar Rock Holding Corp (SRRK)

Every FINRA and SEC series the site collects for Scholar Rock Holding Corp: short interest with days to cover, daily short sale volume, fails to deliver and Form 4 insider trades. Listed on Nasdaq, classified by the SEC as biological products, (no diagnostic substances).

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18.2M

Short interest

settlement 2026-08-14

19.8

Days to cover

+3.1% vs prior

63.5%

Short share of volume

2026-09-11

15,551

Fails to deliver

settlement 2026-08-14

$0

Insider flow, 90 days

0 buys, 0 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 SRRK is 18,218,515 shares, up 621,343 shares over the last month. Over the last 48 readings it ranged from 14,173,937 shares (15 July 2025) to 18,375,421 shares (30 June 2026). The latest reading sits at the top of that range. At the reported average volume of 919K shares a day that is 19.8 days to cover, a crowded short.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-08-1418,218,515+3.1%919,25319.82
2026-07-3117,667,182+0.4%1,088,80116.23
2026-07-1517,597,172-4.2%1,089,59616.15
2026-06-3018,375,421+9.8%2,554,0617.19
2026-06-1516,731,033+1.8%1,035,62116.16
2026-05-2916,428,271+4.9%1,210,87713.57
2026-05-1515,662,038+5.1%1,314,74711.91
2026-04-3014,906,364+0.6%1,382,53810.78
2026-04-1514,813,843-5.9%1,543,2089.60
2026-03-3115,736,891+10.1%1,994,5587.89
2026-03-1314,294,013-1.5%1,620,2948.82
2026-02-2714,518,252-7.0%801,85218.11
2026-02-1315,619,362+0.6%934,29716.72
2026-01-3015,533,415-0.8%936,58616.59
2026-01-1515,666,804+6.3%1,153,82013.58
2025-12-3114,743,037-11.4%914,28216.13
2025-12-1516,646,564+4.4%1,644,16210.12
2025-11-2815,949,554-7.1%2,002,0117.97
2025-11-1417,166,122-4.1%2,042,0988.41
2025-10-3117,901,453+5.8%2,558,0237.00
2025-10-1516,920,104+3.0%3,513,0134.82
2025-09-3016,419,558+2.1%3,325,5604.94
2025-09-1516,075,866-4.5%1,810,0328.88
2025-08-2916,829,723+8.8%1,950,3778.63

Daily short volume

FINRA Reg SHO, last 60 sessions. JSON

As of 11 September 2026, the short share of SRRK volume is 63.5%, up 5.2 points over the last five sessions. Over the last 52 readings it ranged from 25.4% (21 July 2026) to 79.5% (16 July 2026). The latest reading is 4.7 points above the 30-session average of 58.7%, on 389K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-09-11247K389K63.5%0
2026-09-10266K568K46.8%0
2026-09-09421K913K46.1%154
2026-09-08316K490K64.4%8,520
2026-09-04107K199K53.7%0
2026-09-03147K252K58.2%1,200
2026-09-02247K420K58.7%5,397
2026-09-01178K344K51.7%0
2026-08-31119K329K36.1%0
2026-08-28245K336K73.1%787
2026-08-27191K285K66.9%824
2026-08-26640K1.2M54.6%855
2026-08-25239K508K47.1%813
2026-08-24372K578K64.3%9,609
2026-08-21301K563K53.5%0
2026-08-20213K439K48.4%408
2026-08-19246K412K59.7%0
2026-08-18253K584K43.3%1,090
2026-08-17146K205K71.4%315
2026-08-14114K188K60.5%0
2026-08-13319K407K78.5%1,371
2026-08-12164K328K50.1%3,651
2026-08-11244K340K71.8%300
2026-08-10169K379K44.7%0
2026-08-07342K440K77.7%7,000
2026-08-06548K802K68.3%0
2026-08-05277K389K71.3%0
2026-08-04209K297K70.2%0
2026-08-03114K336K34.0%0
2026-07-31277K380K73.0%290

Fails to deliver

SEC, by settlement date. JSON

As of 14 August 2026, the fails-to-deliver balance in SRRK is 15,551 shares, up 15,550 shares over the last settlement date. Over the last 52 readings it ranged from 1 share (10 August 2026) to 194,807 shares (9 December 2025). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-08-1415,551$53.06$825K
2026-08-101$52.92$53
2026-08-0637$47.87$2K
2026-08-0475,223$45.85$3.4M
2026-08-0314,693$47.30$695K
2026-07-27865$47.67$41K
2026-07-2330$48.30$1K
2026-06-305,570$54.96$306K
2026-06-296,564$54.76$359K
2026-06-253,097$52.33$162K
2026-06-2310,786$49.19$531K
2026-06-1856$46.95$3K
2026-06-17583$45.56$27K
2026-06-0820,415$44.30$904K
2026-06-04472$44.64$21K
2026-04-24338$47.48$16K
2026-04-213,357$47.80$160K
2026-04-20357$49.96$18K
2026-03-304,321$42.60$184K
2026-03-27268$44.21$12K
2026-03-26242$45.43$11K
2026-03-234,292$44.64$192K
2026-03-172,155$40.26$87K
2026-03-0320,081$43.48$873K
2026-03-021,719$44.27$76K
2026-02-2381$48.00$4K
2026-02-0614,904$44.45$662K
2026-02-043,370$47.95$162K
2026-02-02579$44.34$26K
2026-01-29187$43.13$8K

Insider trades

SEC Form 4, newest first, 50 of 84 shown. JSON

No open-market insider trades were reported for SRRK in the last 90 days. The most recent filings are listed below; grants and option exercises carry a weaker signal than voluntary trades. Latest filing: Reed Joshua on 2026-06-04.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-06-04Reed Joshuan/aGrant7K$0.00$023K
2026-06-04Peng Katien/aGrant7K$0.00$040K
2026-06-04Gilman Michaeln/aGrant7K$0.00$062K
2026-06-04FLIER JEFFREY S.n/aGrant7K$0.00$031K
2026-06-04Burow Kristinan/aGrant7K$0.00$0118K
2026-06-04Brudnick Richardn/aGrant7K$0.00$022K
2026-06-04AKKARAJU SRINIVASn/aGrant7K$0.00$028K
2026-04-23Burow Kristinan/aOption exercise18K$8.36$150K111K
2026-04-23Burow Kristinan/aOption exercise36K$9.11$328K93K
2026-04-23Burow Kristinan/aOption exercise28K$4.75$133K57K
2026-04-23Burow Kristinan/aOption exercise8K$26.78$209K29K
2026-04-16Woods KeithChief Operating OfficerSell10K$49.57$507K620K
2026-04-16Vaishnaw AkshayPresident of R&amp;DSell12K$49.57$607K631K
2026-04-16Sinha VikasChief Financial OfficerSell10K$49.57$516K620K
2026-04-16Hallal DavidChief Executive OfficerSell31K$49.57$1.5M1.6M
2026-02-23Qatanani MoCHIEF SCIENTIFIC OFFICERSell200$48.48$10K98K
2026-02-23Qatanani MoCHIEF SCIENTIFIC OFFICERSell857$47.86$41K99K
2026-02-23Qatanani MoCHIEF SCIENTIFIC OFFICERSell7K$46.94$349K100K
2026-02-17Qatanani MoCHIEF SCIENTIFIC OFFICERSell8K$46.53$372K107K
2026-02-17Parlavecchio CarynCHROSell9K$46.53$420K169K
2026-02-17Marantz Jing L.CHIEF MEDICAL OFFICERSell4K$46.53$193K126K
2026-02-17Ho JunlinGENERAL COUNSELSell10K$46.53$446K242K
2026-02-09Vaishnaw AkshayPresident of R&amp;DGrant47K$0.00$0643K
2026-02-09Sinha VikasChief Financial OfficerGrant47K$0.00$0630K
2026-02-09Woods KeithChief Operating OfficerGrant47K$0.00$0630K
2026-02-09Qatanani MoChief Scientific OfficerGrant29K$0.00$0115K
2026-02-09Parlavecchio CarynChief Human Resources OfficerGrant29K$0.00$0178K
2026-02-09Marantz Jing L.Chief Medical OfficerGrant34K$0.00$0130K
2026-02-09Ho JunlinGeneral CounselGrant37K$0.00$0251K
2026-02-09Hallal DavidChief Executive OfficerGrant128K$0.00$01.7M
2026-01-22Qatanani MoCHIEF SCIENTIFIC OFFICERSell13K$46.85$599K86K
2026-01-22Qatanani MoCHIEF SCIENTIFIC OFFICERSell2K$45.87$97K98K
2026-01-16Qatanani MoCHIEF SCIENTIFIC OFFICERSell8K$44.48$374K101K
2026-01-16Parlavecchio CarynCHROSell7K$44.48$294K149K
2026-01-16Marantz Jing L.CHIEF MEDICAL OFFICERSell6K$44.48$258K96K
2026-01-16Ho JunlinGENERAL COUNSELSell8K$44.48$357K215K
2026-01-14Qatanani MoCHIEF SCIENTIFIC OFFICERSell13K$45.20$593K109K
2026-01-14Qatanani MoCHIEF SCIENTIFIC OFFICEROption exercise3K$35.15$94K122K
2026-01-14Qatanani MoCHIEF SCIENTIFIC OFFICEROption exercise6K$15.75$93K119K
2026-01-14Qatanani MoCHIEF SCIENTIFIC OFFICEROption exercise3K$10.00$28K114K
2026-01-14Qatanani MoCHIEF SCIENTIFIC OFFICEROption exercise321$7.62$2K111K
2026-01-14Qatanani MoCHIEF SCIENTIFIC OFFICEROption exercise1K$18.08$25K110K
2026-01-13Sinha VikasChief Financial OfficerSell17K$42.70$715K583K
2026-01-13Woods KeithChief Operating OfficerSell17K$42.70$715K583K
2026-01-13Vaishnaw AkshayPresident of R&amp;DSell20K$42.70$873K596K
2026-01-13Hallal DavidChief Executive OfficerSell57K$42.70$2.5M1.5M
2025-12-16Peng Katien/aSell280$44.63$12K33K
2025-12-16Peng Katien/aSell726$43.88$32K33K
2025-12-12AKKARAJU SRINIVASn/aX1.1M$7.35$7.8M6.4M
2025-12-11Invus Global Management, LLCn/aX1.6M$7.35$11.6M10.8M

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.

Large holders (13D and 13G)

One row per reporting person, newest filing first. JSON

8 holders above 5% have filed on SRRK, all on Schedule 13G (passive). The largest reported stake is Siren, L.L.C. at 8.0% of the class (9,575,013 shares), filed 2026-08-13 for an event on 2026-06-30.

FiledFormHolderSharesOf classEvent
2026-08-1413G/Ano. 11Redmile Group, LLCinvestment adviser, other entity4.3M3.6%2026-06-30
2026-08-1413G/Ano. 11Jeremy C. Greenparent holding company, individual4.3M3.6%2026-06-30
2026-08-1413G/Ano. 11RedCo II Master Fund, L.P.partnership, non-US institution00.0%2026-06-30
2026-08-1313G/Ano. 10Siren, L.L.C.other entity9.6M8.0%2026-06-30
2026-08-1313G/Ano. 10Invus Public Equities, L.P.partnership9.6M8.0%2026-06-30
2026-08-1313G/Ano. 10Raymond Debbaneindividual9.6M8.0%2026-06-30
2026-08-1313G/Ano. 10Invus Public Equities Advisors, LLCother entity9.6M8.0%2026-06-30
2026-08-1313G/Ano. 10Invus Global Management, LLCother entity9.6M8.0%2026-06-30

13F holders

Tracked managers holding SRRK at their latest 13F. JSON

8 of the 30 tracked managers held SRRK at their latest 13F, $83.9M in total at quarter-end prices. Citadel Advisors is the largest at $25.3M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 4 cut.

FundQuarterSharesValueOf portfolioChange in shares
Citadel Advisors2026-06-30460K$25.3M0.00%-527K
Fisher Asset Management2026-06-30439K$24.2M0.01%-19K
AQR Capital Management2026-06-30248K$13.6M0.00%+36K
D. E. Shaw & Co.2026-06-30245K$13.5M0.01%+230K
Renaissance Technologies2026-06-3092K$5.0M0.01%-200K
Millennium Management2026-06-3018K$994K0.00%new or n/a
Point72 Asset Management2026-06-3015K$836K0.00%0
Two Sigma Investments2026-06-3010K$525K0.00%-169K

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 FY 2025 it generated -$300.0M of operating cash flow. As of 2026-06-30, cash was $437.1M against $196.2M of debt.

Cash
$437.1M
Debt
$196.2M
Equity
$253.8M
Total assets
$523.5M
Shares outstanding
121,785,282

Quarterly, last 8 quarters

QuarterPeriod endRevenueNet incomeMarginDiluted EPS
Q2 20262026-06-30n/a-$109.9Mn/a-0.84
Q1 20262026-03-31$0-$105.5Mn/a-0.83
Q4 2025derived2025-12-31n/an/an/an/a
Q3 20252025-09-30n/a-$102.2Mn/a-0.90
Q2 20252025-06-30n/a-$110.0Mn/a-0.98
Q1 20252025-03-31n/a-$74.7Mn/a-0.67
Q3 20242024-09-30n/a-$64.5Mn/a-0.66
Q2 20242024-06-30n/a-$58.5Mn/a-0.60

Fiscal years, with buybacks and dividends

Fiscal yearEndsRevenueNet incomeOperating cash flowCapexBuybacksDividends
FY 20252025-12-31$0n/a-$300.0M$602Kn/an/a
FY 20242024-12-31n/an/a-$200.9M$98Kn/an/a
FY 20232023-12-31n/an/a-$145.2M$71Kn/an/a
FY 20222022-12-31$33.2M-$134.5M-$132.7M$1.1Mn/an/a
FY 20212021-12-31$18.8M-$131.8M-$126.8M$5.2Mn/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; shares outstanding as of 2026-08-03 from the cover page.

What this page is

Scholar Rock Holding Corp 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 Scholar Rock Holding Corp (SRRK), SEC CIK 1727196, listed on Nasdaq, classified by the SEC as biological products, (no diagnostic substances). 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
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 2026-08-14.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 2026-06-04.JSON and CSV
Company record
EDGAR filing index for CIK 1727196Ticker, 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 SRRK is sold short?
18,218,515 shares were held short at the 2026-08-14 settlement, 19.8 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 SRRK's daily short volume?
On 2026-09-11, 247,147 of the 389,455 SRRK shares reported to FINRA were sold short, 63.5% of the day's reported volume. Short volume is a flow for one day, not a position.
Does SRRK have fails to deliver?
The SEC's latest file shows 15,551 SRRK shares failed to deliver at settlement 2026-08-14. Fails are reported per settlement date and published twice a month with a lag.
Are SRRK insiders buying or selling?
No open-market insider trades were reported for SRRK in the last 90 days. The most recent filings are listed below; grants and option exercises carry a weaker signal than voluntary trades. Latest filing: Reed Joshua on 2026-06-04.
Who owns more than 5% of SRRK?
8 holders above 5% have filed on SRRK, all on Schedule 13G (passive). The largest reported stake is Siren, L.L.C. at 8.0% of the class (9,575,013 shares), filed 2026-08-13 for an event on 2026-06-30.
What did SRRK report last quarter?
In FY 2025 it generated -$300.0M of operating cash flow. As of 2026-06-30, cash was $437.1M against $196.2M of debt.
Which funds hold SRRK?
8 of the 30 tracked managers held SRRK at their latest 13F, $83.9M in total at quarter-end prices. Citadel Advisors is the largest at $25.3M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 4 cut.

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