XOOMAR

HALOZYME THERAPEUTICS, INC. (HALO)

Every FINRA and SEC series the site collects for HALOZYME THERAPEUTICS, INC.: 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).

Download CSV

14.6M

Short interest

settlement 2026-08-14

5.0

Days to cover

+4.4% vs prior

63.0%

Short share of volume

2026-09-11

14

Fails to deliver

settlement 2026-08-13

-$12.9M

Insider flow, 90 days

0 buys, 19 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 HALO is 14,636,927 shares, up 1,340,966 shares over the last month. Over the last 48 readings it ranged from 8,566,431 shares (29 November 2024) to 14,636,927 shares (14 August 2026). The latest reading sits at the top of that range. At the reported average volume of 2.9M shares a day that is 5.0 days to cover, elevated.

Embed this chartfree, with the attribution line it carries
<iframe src="https://xoomar.com/embed/stocks/halo" 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
2026-08-1414,636,927+4.4%2,919,8035.01
2026-07-3114,022,134+5.5%1,679,1198.35
2026-07-1513,295,961+0.5%1,828,7077.27
2026-06-3013,226,223+2.1%2,108,7876.27
2026-06-1512,948,289-5.1%1,652,5267.84
2026-05-2913,644,245+1.9%1,680,3278.12
2026-05-1513,389,887-6.9%1,991,7716.72
2026-04-3014,381,741+0.9%1,407,54910.22
2026-04-1514,257,845+1.5%1,348,99910.57
2026-03-3114,046,350+2.5%1,493,2889.41
2026-03-1313,701,015+1.5%1,630,4248.40
2026-02-2713,498,344-2.1%2,199,3216.14
2026-02-1313,795,570+2.1%2,134,1026.46
2026-01-3013,515,827-0.6%1,490,8699.07
2026-01-1513,593,503-1.5%2,227,8166.10
2025-12-3113,800,472+10.4%1,395,9589.89
2025-12-1512,500,858+1.0%2,816,3174.44
2025-11-2812,372,896-0.8%2,042,7146.06
2025-11-1412,479,411+10.4%3,188,4113.91
2025-10-3111,305,141-1.8%1,477,5997.65
2025-10-1511,510,110+6.6%2,398,2874.80
2025-09-3010,797,290-8.3%2,208,1824.89
2025-09-1511,779,854-0.9%1,836,3416.41
2025-08-2911,883,269+12.4%2,069,5265.74

Daily short volume

FINRA Reg SHO, last 60 sessions. JSON

As of 11 September 2026, the short share of HALO volume is 63.0%, up 2.4 points over the last five sessions. Over the last 52 readings it ranged from 17.8% (14 August 2026) to 85.0% (17 July 2026). The latest reading is 12.4 points above the 30-session average of 50.7%, on 440K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-09-11277K440K63.0%5,034
2026-09-10173K455K38.1%9,977
2026-09-09188K526K35.8%8,815
2026-09-08319K744K42.9%23,578
2026-09-04161K407K39.6%0
2026-09-03541K892K60.7%56,364
2026-09-02394K689K57.2%616
2026-09-01215K412K52.0%1,259
2026-08-31147K417K35.3%981
2026-08-28207K578K35.7%928
2026-08-27233K567K41.2%30,265
2026-08-26166K510K32.5%6,671
2026-08-25443K729K60.8%52,772
2026-08-24299K660K45.3%398
2026-08-21303K572K53.0%10,386
2026-08-20215K444K48.4%466
2026-08-19566K1.2M46.7%35,716
2026-08-18403K889K45.4%8,058
2026-08-17523K1.1M46.4%31,519
2026-08-14158K889K17.8%858
2026-08-13350K980K35.7%94,474
2026-08-121.3M2.0M67.3%184,264
2026-08-111.1M1.5M72.0%62,423
2026-08-101.1M1.8M58.4%218,715
2026-08-072.0M3.9M51.4%177,876
2026-08-06495K1.0M48.7%23,820
2026-08-05449K568K79.0%20,603
2026-08-04397K554K71.6%24,229
2026-08-03285K481K59.3%203
2026-07-31467K592K78.9%456

Fails to deliver

SEC, by settlement date. JSON

As of 13 August 2026, the fails-to-deliver balance in HALO is 14 shares, down 857 shares over the last settlement date. Over the last 52 readings it ranged from 2 shares (5 February 2026) to 29,083 shares (5 June 2026). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-08-1314$101.79$1K
2026-08-10871$103.12$90K
2026-08-074,876$85.76$418K
2026-08-0641$83.59$3K
2026-08-05108$83.23$9K
2026-08-03305$82.54$25K
2026-07-311,515$83.30$126K
2026-07-304,780$83.28$398K
2026-07-2350$77.82$4K
2026-07-22138$78.60$11K
2026-07-2118,373$77.09$1.4M
2026-07-17261$77.54$20K
2026-07-1517,716$75.05$1.3M
2026-07-09750$80.37$60K
2026-07-064,643$79.45$369K
2026-06-2924,256$74.96$1.8M
2026-06-268,279$72.64$601K
2026-06-253,517$71.15$250K
2026-06-243,233$69.62$225K
2026-06-186$68.57$411
2026-06-15129$69.50$9K
2026-06-1047$71.48$3K
2026-06-0529,083$71.60$2.1M
2026-04-298,514$63.86$544K
2026-04-28950$64.49$61K
2026-04-2467$66.59$4K
2026-04-23215$68.40$15K
2026-04-1745$66.64$3K
2026-04-1636$68.05$2K
2026-04-082,291$63.60$146K

Insider trades

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

Insiders at HALO reported 19 open-market sells worth $12.9M 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: Torley Helen (PRESIDENT AND CEO) on 2026-09-11.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-09-11Torley HelenPRESIDENT AND CEOSell5K$107.55$485K768K
2026-09-11Torley HelenPRESIDENT AND CEOSell15K$107.15$1.7M772K
2026-09-11Torley HelenPRESIDENT AND CEOOption exercise20K$18.41$368K788K
2026-09-10Torley HelenPRESIDENT AND CEOSell5K$107.58$582K768K
2026-09-10Torley HelenPRESIDENT AND CEOSell15K$107.01$1.6M773K
2026-09-10Torley HelenPRESIDENT AND CEOOption exercise20K$18.41$368K788K
2026-09-09Torley HelenPRESIDENT AND CEOSell100$108.67$11K768K
2026-09-09Torley HelenPRESIDENT AND CEOSell7K$107.82$711K768K
2026-09-09Torley HelenPRESIDENT AND CEOSell13K$107.22$1.4M774K
2026-09-09Torley HelenPRESIDENT AND CEOOption exercise20K$18.41$368K788K
2026-09-01Appelhans Danniellen/aGrant1K$0.00$01K
2026-08-19Torley HelenPRESIDENT AND CEOSell3K$107.77$345K768K
2026-08-19Torley HelenPRESIDENT AND CEOSell10K$107.22$1.0M771K
2026-08-19Torley HelenPRESIDENT AND CEOSell7K$106.36$766K781K
2026-08-19Torley HelenPRESIDENT AND CEOOption exercise20K$18.41$368K788K
2026-08-18Torley HelenPRESIDENT AND CEOSell9K$104.87$986K768K
2026-08-18Torley HelenPRESIDENT AND CEOSell5K$104.11$510K777K
2026-08-18Torley HelenPRESIDENT AND CEOSell6K$103.08$588K782K
2026-08-18Torley HelenPRESIDENT AND CEOOption exercise20K$18.41$368K788K
2026-08-17Torley HelenPRESIDENT AND CEOSell8K$103.48$776K768K
2026-08-17Torley HelenPRESIDENT AND CEOSell9K$102.55$923K775K
2026-08-17Torley HelenPRESIDENT AND CEOSell2K$101.77$214K784K
2026-08-17Torley HelenPRESIDENT AND CEOSell500$100.46$50K786K
2026-08-17Torley HelenPRESIDENT AND CEOSell900$98.96$89K787K
2026-08-17Torley HelenPRESIDENT AND CEOOption exercise20K$18.41$368K788K
2026-08-10Connaughton Bernadetten/aSell2K$102.80$167K40K
2026-06-03Torley HelenPRESIDENT AND CEOSell6K$69.69$425K768K
2026-06-03Torley HelenPRESIDENT AND CEOSell2K$68.74$137K774K
2026-06-03Torley HelenPRESIDENT AND CEOSell2K$67.67$102K776K
2026-06-03Torley HelenPRESIDENT AND CEOSell400$66.37$27K777K
2026-06-03Torley HelenPRESIDENT AND CEOOption exercise10K$12.07$121K778K
2026-06-02Torley HelenPRESIDENT AND CEOSell3K$66.75$227K768K
2026-06-02Torley HelenPRESIDENT AND CEOSell17K$66.31$1.1M771K
2026-06-02Torley HelenPRESIDENT AND CEOOption exercise20K$12.07$241K788K
2026-06-01Connaughton Bernadetten/aSell2K$66.21$108K44K
2026-06-01Torley HelenPRESIDENT AND CEOSell5K$68.35$369K768K
2026-06-01Torley HelenPRESIDENT AND CEOSell13K$67.41$876K773K
2026-06-01Torley HelenPRESIDENT AND CEOSell2K$66.39$107K786K
2026-06-01Torley HelenPRESIDENT AND CEOOption exercise20K$12.07$241K788K
2026-05-13Torley HelenPRESIDENT AND CEOSell600$70.81$42K768K
2026-05-13Torley HelenPRESIDENT AND CEOSell4K$69.79$276K768K
2026-05-13Torley HelenPRESIDENT AND CEOSell3K$68.88$231K772K
2026-05-13Torley HelenPRESIDENT AND CEOSell2K$68.10$143K776K
2026-05-13Torley HelenPRESIDENT AND CEOOption exercise10K$12.07$121K778K
2026-05-12Torley HelenPRESIDENT AND CEOSell3K$73.12$205K768K
2026-05-12Torley HelenPRESIDENT AND CEOSell6K$72.15$426K771K
2026-05-12Torley HelenPRESIDENT AND CEOSell10K$71.37$700K776K
2026-05-12Torley HelenPRESIDENT AND CEOSell1K$70.29$98K786K
2026-05-12Torley HelenPRESIDENT AND CEOSell100$67.85$7K788K
2026-05-12Torley HelenPRESIDENT AND CEOOption exercise20K$12.07$241K788K

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

2 Form 144 notices on file for HALO worth $4.5M at the prices reported; 2 in the last 90 days worth $4.5M. Latest: CORTNEY A CAUDILL filed on 2026-08-11 to sell 41,702 shares ($4.3M) from 2026-08-11.

FiledSellerSharesMarket valueOf outstandingSale fromBroker
2026-08-11CORTNEY A CAUDILLOfficer42K$4.3M0.037%2026-08-11Morgan Stanley Smith Barney LLC Executive Financial Services
2026-08-10BERNADETTE CONNAUGHTONDirector2K$168K0.001%2026-08-10Morgan Stanley Smith Barney LLC Executive Financial Services

13F holders

Tracked managers holding HALO at their latest 13F. JSON

9 of the 30 tracked managers held HALO at their latest 13F, $601.3M in total at quarter-end prices. D. E. Shaw & Co. is the largest at $160.0M (0.1% of its portfolio) as of 2026-06-30. Over the prior quarter 3 added shares and 6 cut.

FundQuarterSharesValueOf portfolioChange in shares
D. E. Shaw & Co.2026-06-302.0M$160.0M0.08%+145K
Two Sigma Investments2026-06-301.7M$129.4M0.09%+68K
Citadel Advisors2026-06-3066.0M$96.7M0.01%+65.6M
AQR Capital Management2026-06-30786K$61.5M0.02%-231K
Renaissance Technologies2026-06-30480K$37.5M0.05%-252K
Bridgewater Associates2026-06-30463K$36.3M0.15%-48K
Fisher Asset Management2026-06-30428K$33.5M0.01%-17K
Citadel Advisors2026-06-30422K$33.1M0.00%-19.0M
Citadel Advisors2026-06-3011.9M$13.3M0.00%-54.1M

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) HALOZYME THERAPEUTICS, INC. reported revenue of $481.0M, up 47.7% from the same quarter a year earlier, and net income of $229.9M (1.90 diluted EPS). In FY 2025 it generated $651.6M of operating cash flow and spent $342.4M on buybacks. As of 2026-06-30, cash was $163.1M against $1.94B of debt.

Cash
$163.1M
Debt
$1.94B
Equity
$143.5M
Total assets
$2.58B
Shares outstanding
113,498,000

Quarterly, last 8 quarters

QuarterPeriod endRevenueNet incomeMarginDiluted EPS
Q2 20262026-06-30$481.0M$229.9M47.8%1.90
Q1 20262026-03-31$376.7M$150.0M39.8%1.22
Q4 2025derived2025-12-31$451.8M-$141.6M-31.3%n/a
Q3 20252025-09-30$354.3M$175.2M49.5%1.43
Q2 20252025-06-30$325.7M$165.2M50.7%1.33
Q1 20252025-03-31$264.9M$118.1M44.6%0.93
Q4 2024derived2024-12-31$298.0M$137.0M46.0%n/a
Q3 20242024-09-30$290.1M$137.0M47.2%1.05

Fiscal years, with buybacks and dividends

Fiscal yearEndsRevenueNet incomeOperating cash flowCapexBuybacksDividends
FY 20252025-12-31$1.40B$316.9M$651.6M$7.0M$342.4Mn/a
FY 20242024-12-31$1.02B$444.1M$479.1M$10.7M$250.0Mn/a
FY 20232023-12-31$829.3M$281.6M$388.6M$15.3M$402.4Mn/a
FY 20222022-12-31$660.1M$202.1M$240.1M$4.8M$200.0Mn/a
FY 20212021-12-31$443.3M$402.7M$299.4M$1.5M$350.1Mn/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 2026-07-31 from the cover page.

What this page is

HALOZYME THERAPEUTICS, 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 HALOZYME THERAPEUTICS, INC. (HALO), SEC CIK 1159036, 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 2026-08-13.JSON and CSV
Planned sales
SEC EDGAR Form 144EDGAR read every 30 minutes; a notice is filed on or before the sell order. Latest 2026-08-11.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 2026-09-11.JSON and CSV
Company record
EDGAR filing index for CIK 1159036Ticker, 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 HALO is sold short?
14,636,927 shares were held short at the 2026-08-14 settlement, 5.0 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 HALO's daily short volume?
On 2026-09-11, 277,233 of the 439,831 HALO shares reported to FINRA were sold short, 63.0% of the day's reported volume. Short volume is a flow for one day, not a position.
Does HALO have fails to deliver?
The SEC's latest file shows 14 HALO shares failed to deliver at settlement 2026-08-13. Fails are reported per settlement date and published twice a month with a lag.
Are HALO insiders buying or selling?
Insiders at HALO reported 19 open-market sells worth $12.9M 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: Torley Helen (PRESIDENT AND CEO) on 2026-09-11.
Have HALO insiders filed to sell?
2 Form 144 notices on file for HALO worth $4.5M at the prices reported; 2 in the last 90 days worth $4.5M. Latest: CORTNEY A CAUDILL filed on 2026-08-11 to sell 41,702 shares ($4.3M) from 2026-08-11.
What did HALO report last quarter?
In Q2 2026 (quarter ended 2026-06-30) HALOZYME THERAPEUTICS, INC. reported revenue of $481.0M, up 47.7% from the same quarter a year earlier, and net income of $229.9M (1.90 diluted EPS). In FY 2025 it generated $651.6M of operating cash flow and spent $342.4M on buybacks. As of 2026-06-30, cash was $163.1M against $1.94B of debt.
Which funds hold HALO?
9 of the 30 tracked managers held HALO at their latest 13F, $601.3M in total at quarter-end prices. D. E. Shaw & Co. is the largest at $160.0M (0.1% of its portfolio) as of 2026-06-30. Over the prior quarter 3 added shares and 6 cut.

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