XOOMAR

Autolus Therapeutics plc (AUTL)

Every FINRA and SEC series the site collects for Autolus Therapeutics plc: short interest with days to cover, daily short sale volume, fails to deliver and Form 4 insider trades. Listed on Nasdaq.

Download CSV

10.5M

Short interest

settlement 2026-08-14

2.4

Days to cover

-24.0% vs prior

55.7%

Short share of volume

2026-09-11

19,111

Fails to deliver

settlement 2026-08-11

-$16K

Insider flow, 90 days

0 buys, 1 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 AUTL is 10,484,939 shares, down 4,657,969 shares over the last month. Over the last 48 readings it ranged from 6,248,827 shares (15 November 2024) to 15,860,958 shares (13 February 2026). At the reported average volume of 4.4M shares a day that is 2.4 days to cover.

Embed this chartfree, with the attribution line it carries
<iframe src="https://xoomar.com/embed/stocks/autl" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
PreviewDark previewAdd ?theme=dark to the src for a dark chart.
SettlementShares shortChangeAvg daily volumeDays to cover
2026-08-1410,484,939-24.0%4,394,0542.39
2026-07-3113,789,710-8.9%828,90116.64
2026-07-1515,142,908+21.2%1,442,40710.50
2026-06-3012,493,728-7.3%942,33913.26
2026-06-1513,476,088+5.4%1,324,50310.17
2026-05-2912,786,624-8.8%1,853,0666.90
2026-05-1514,017,528+7.1%1,625,6248.62
2026-04-3013,088,539-7.9%1,244,38510.52
2026-04-1514,206,924-2.6%1,368,06110.38
2026-03-3114,582,459-0.8%2,029,9327.18
2026-03-1314,696,007-1.8%1,514,5759.70
2026-02-2714,966,126-5.6%1,706,6208.77
2026-02-1315,860,958+2.8%1,150,94413.78
2026-01-3015,435,023+11.0%1,711,7949.02
2026-01-1513,902,770+13.1%2,934,7954.74
2025-12-3112,295,794+1.4%2,553,2524.82
2025-12-1512,128,428-6.3%2,687,5294.51
2025-11-2812,948,282+11.0%5,003,3832.59
2025-11-1411,662,315-2.7%2,624,2264.44
2025-10-3111,981,268+1.4%2,219,2985.40
2025-10-1511,821,704+2.9%3,277,5163.61
2025-09-3011,487,493+8.3%5,042,9112.28
2025-09-1510,606,444+4.9%6,011,1991.76
2025-08-2910,109,158-32.2%2,417,1724.18

Daily short volume

FINRA Reg SHO, last 60 sessions. JSON

As of 11 September 2026, the short share of AUTL volume is 55.7%, up 29.7 points over the last five sessions. Over the last 52 readings it ranged from 14.5% (25 August 2026) to 73.2% (14 July 2026). The latest reading is 25.2 points above the 30-session average of 30.5%, on 1.0M shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-09-11571K1.0M55.7%0
2026-09-10202K561K35.9%5,133
2026-09-09331K880K37.6%0
2026-09-08628K1.4M45.8%2,690
2026-09-04447K818K54.6%0
2026-09-03239K922K25.9%100
2026-09-02498K947K52.5%0
2026-09-01295K789K37.4%189
2026-08-31171K472K36.1%2,437
2026-08-28234K637K36.6%8
2026-08-2799K458K21.7%0
2026-08-26139K688K20.2%0
2026-08-25103K712K14.5%0
2026-08-2499K574K17.2%0
2026-08-21178K1.1M16.3%92
2026-08-20286K1.4M20.7%3,474
2026-08-19660K3.2M20.3%26,449
2026-08-18447K1.9M23.1%27,316
2026-08-17355K1.3M27.5%1,732
2026-08-14483K1.3M36.8%3,361
2026-08-13183K861K21.3%37,580
2026-08-12400K2.1M18.9%36,552
2026-08-11545K3.0M18.3%39,247
2026-08-10256K1.0M25.2%0
2026-08-07227K954K23.8%0
2026-08-06355K1.6M21.7%22,948
2026-08-05158K714K22.2%5
2026-08-04355K1.8M19.4%2,481
2026-08-033.1M8.1M38.9%90,372
2026-07-31216K317K68.3%3,873

Fails to deliver

SEC, by settlement date. JSON

As of 11 August 2026, the fails-to-deliver balance in AUTL is 19,111 shares, down 15,294 shares over the last settlement date. Over the last 52 readings it ranged from 12 shares (5 March 2026) to 160,000 shares (5 June 2026).

SettlementShares failedPriceValue
2026-08-1119,111$2.07$40K
2026-08-0634,405$1.90$65K
2026-08-05799$1.95$2K
2026-08-0485,036$1.82$155K
2026-07-312,000$1.53$3K
2026-07-275,197$1.45$8K
2026-07-22251$1.47$369
2026-07-179,900$1.46$14K
2026-07-159,821$1.45$14K
2026-07-1431,980$1.48$47K
2026-07-0715,100$1.63$25K
2026-07-063,500$1.58$6K
2026-07-01424$1.60$678
2026-06-3011,457$1.65$19K
2026-06-26103$1.59$164
2026-06-24233$1.66$387
2026-06-221,500$1.51$2K
2026-06-15171$1.56$267
2026-06-0844,896$1.53$69K
2026-06-05160,000$1.66$266K
2026-06-0338,742$1.75$68K
2026-06-0228,452$1.84$52K
2026-06-0114,468$1.87$27K
2026-04-301,266$1.41$2K
2026-04-298,255$1.48$12K
2026-04-2768$1.44$98
2026-04-2119,331$1.58$31K
2026-04-203,279$1.60$5K
2026-04-1626$1.49$39
2026-04-1530,331$1.48$45K

Insider trades

SEC Form 4, newest first. JSON

Insiders at AUTL reported 1 open-market sell worth $16K in the last 90 days and no open-market buys. Sells alone are a weak signal; insiders sell for tax, diversification and estate reasons all the time. Latest filing: Piccina Cintia (U.S. CCO &amp; Country Gen Manager) on 2026-09-02.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-09-02Piccina CintiaU.S. CCO &amp; Country Gen ManagerSell7K$2.34$16K13K
2026-09-01Piccina CintiaU.S. CCO &amp; Country Gen ManagerOption exercise20K$2.35$47K20K

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

1 Form 144 notice on file for AUTL worth $16K at the prices reported; 1 in the last 90 days worth $16K. Latest: Piccina Cintia filed on 2026-09-02 to sell 6,713 shares ($16K) from 2026-09-02.

FiledSellerSharesMarket valueOf outstandingSale fromBroker
2026-09-02Piccina CintiaOfficer7K$16K0.003%2026-09-02Fidelity Brokerage Services LLC

Large holders (13D and 13G)

One row per reporting person, newest filing first. JSON

4 holders above 5% have filed on AUTL, 4 on Schedule 13D (active intent). The largest reported stake is Renata Kellnerova at 5.6% of the class (14,782,275 shares), filed 2026-08-28 for an event on 2026-08-27.

FiledFormHolderSharesOf classEvent
2026-08-2813D/Ano. 11Renata Kellnerovaindividual14.8M5.6%2026-08-27
2026-08-2813D/Ano. 11AMALAR HOLDING s.r.o.corporation14.8M5.6%2026-08-27
2026-08-2813D/Ano. 11PPF Group a.s.corporation14.8M5.6%2026-08-27
2026-08-2813D/Ano. 11PPF IM Ltd.corporation14.8M5.6%2026-08-27

13F holders

Tracked managers holding AUTL at their latest 13F. JSON

4 of the 30 tracked managers held AUTL at their latest 13F, $6.5M in total at quarter-end prices. Renaissance Technologies is the largest at $3.2M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 1 added shares and 2 cut.

FundQuarterSharesValueOf portfolioChange in shares
Renaissance Technologies2026-06-302.0M$3.2M0.00%-315K
Millennium Management2026-06-301.2M$2.0M0.00%new or n/a
Citadel Advisors2026-06-30806K$1.3M0.00%+220K
Point72 Asset Management2026-06-3071K$114K0.00%-356K

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

Autolus Therapeutics plc 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 Autolus Therapeutics plc (AUTL), SEC CIK 1730463, listed on Nasdaq. 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 2026-08-11.JSON and CSV
Planned sales
SEC EDGAR Form 144EDGAR read every 30 minutes; a notice is filed on or before the sell order. Latest 2026-09-02.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 2026-08-28.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
Insider trades
SEC EDGAR Form 4EDGAR read every 30 minutes; filings are due two business days after the trade. Latest 2026-09-02.JSON and CSV
Company record
EDGAR filing index for CIK 1730463Ticker, 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.

Other company pages

Datasets

Frequently Asked Questions

How much of AUTL is sold short?
10,484,939 shares were held short at the 2026-08-14 settlement, 2.4 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 AUTL's daily short volume?
On 2026-09-11, 571,497 of the 1,026,726 AUTL shares reported to FINRA were sold short, 55.7% of the day's reported volume. Short volume is a flow for one day, not a position.
Does AUTL have fails to deliver?
The SEC's latest file shows 19,111 AUTL shares failed to deliver at settlement 2026-08-11. Fails are reported per settlement date and published twice a month with a lag.
Are AUTL insiders buying or selling?
Insiders at AUTL reported 1 open-market sell worth $16K in the last 90 days and no open-market buys. Sells alone are a weak signal; insiders sell for tax, diversification and estate reasons all the time. Latest filing: Piccina Cintia (U.S. CCO &amp; Country Gen Manager) on 2026-09-02.
Have AUTL insiders filed to sell?
1 Form 144 notice on file for AUTL worth $16K at the prices reported; 1 in the last 90 days worth $16K. Latest: Piccina Cintia filed on 2026-09-02 to sell 6,713 shares ($16K) from 2026-09-02.
Who owns more than 5% of AUTL?
4 holders above 5% have filed on AUTL, 4 on Schedule 13D (active intent). The largest reported stake is Renata Kellnerova at 5.6% of the class (14,782,275 shares), filed 2026-08-28 for an event on 2026-08-27.
Which funds hold AUTL?
4 of the 30 tracked managers held AUTL at their latest 13F, $6.5M in total at quarter-end prices. Renaissance Technologies is the largest at $3.2M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 1 added shares and 2 cut.

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