ICON (ICLR)
ICON on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials and insider trades. Listed on Nasdaq, classified by the SEC as services-commercial physical & biological research.
2.8M
Short interest
settlement 2026-09-30
2.5
Days to cover
-0.2 days vs prior
36.9%
Short share of volume
2026-10-09
709
Fails to deliver
settlement 2026-09-11
-$4.0M
Insider flow, 90 days
0 buys, 37 sells
As of 2026-10-09.
Short interest
FINRA, twice a month. The newest 24 settlements in the table, 48 in the chart. JSONAs of 30 September 2026, short interest in ICLR is 2,801,170 shares, up 422,077 shares over the last month. Over the last 48 readings it ranged from 1,080,136 shares (31 October 2024) to 3,292,216 shares (15 May 2026). At the reported average volume of 1.1M shares a day that is 2.5 days to cover.
Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/iclr" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-09-30 | 2,801,170 | +6.6% | 1,103,985 | 2.54 |
| 2026-09-15 | 2,626,654 | +10.4% | 948,045 | 2.77 |
| 2026-08-31 | 2,379,093 | +7.1% | 475,293 | 5.01 |
| 2026-08-14 | 2,220,474 | -0.1% | 638,274 | 3.48 |
| 2026-07-31 | 2,223,311 | -14.4% | 963,379 | 2.31 |
| 2026-07-15 | 2,596,851 | -13.2% | 610,687 | 4.25 |
| 2026-06-30 | 2,991,578 | -7.7% | 1,238,295 | 2.42 |
| 2026-06-15 | 3,240,155 | +7.8% | 1,109,757 | 2.92 |
| 2026-05-29 | 3,006,810 | -8.7% | 1,194,638 | 2.52 |
| 2026-05-15 | 3,292,216 | +22.9% | 937,639 | 3.51 |
| 2026-04-30 | 2,678,541 | -13.4% | 1,813,836 | 1.48 |
| 2026-04-15 | 3,094,555 | +6.8% | 788,426 | 3.92 |
| 2026-03-31 | 2,896,513 | +42.8% | 938,420 | 3.09 |
| 2026-03-13 | 2,029,053 | +5.2% | 1,187,988 | 1.71 |
| 2026-02-27 | 1,929,158 | -3.5% | 2,019,257 | 1.00 |
| 2026-02-13 | 2,000,193 | -29.2% | 4,988,199 | 1.00 |
| 2026-01-30 | 2,823,591 | +3.0% | 732,091 | 3.86 |
| 2026-01-15 | 2,742,161 | +3.9% | 1,146,904 | 2.39 |
| 2025-12-31 | 2,639,596 | -5.3% | 616,638 | 4.28 |
| 2025-12-15 | 2,785,807 | -0.1% | 1,029,488 | 2.71 |
| 2025-11-28 | 2,788,306 | +46.9% | 1,130,930 | 2.47 |
| 2025-11-14 | 1,898,717 | +0.5% | 633,724 | 3.00 |
| 2025-10-31 | 1,889,137 | -16.1% | 1,202,025 | 1.57 |
| 2025-10-15 | 2,251,815 | -9.2% | 836,761 | 2.69 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 9 October 2026, the short share of ICLR volume is 36.9%, down 30.4 points over the last five sessions. Over the last 30 readings it ranged from 30.5% (15 September 2026) to 82.1% (8 October 2026). The latest reading is 19.1 points below the 30-session average of 56.0%, on 398K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-09 | 147K | 398K | 36.9% | 0 |
| 2026-10-08 | 339K | 413K | 82.1% | 1 |
| 2026-10-07 | 183K | 359K | 50.9% | 1,269 |
| 2026-10-06 | 291K | 455K | 64.1% | 200 |
| 2026-10-05 | 206K | 470K | 43.9% | 260 |
| 2026-10-02 | 141K | 209K | 67.3% | 1 |
| 2026-10-01 | 193K | 294K | 65.7% | 53 |
| 2026-09-30 | 157K | 417K | 37.6% | 0 |
| 2026-09-29 | 408K | 693K | 58.9% | 0 |
| 2026-09-28 | 388K | 513K | 75.6% | 321 |
| 2026-09-25 | 213K | 320K | 66.6% | 4,589 |
| 2026-09-24 | 332K | 867K | 38.3% | 1,460 |
| 2026-09-23 | 157K | 465K | 33.8% | 138 |
| 2026-09-22 | 191K | 338K | 56.6% | 56 |
| 2026-09-21 | 224K | 388K | 57.8% | 15 |
| 2026-09-18 | 218K | 329K | 66.2% | 463 |
| 2026-09-17 | 235K | 559K | 42.0% | 2,314 |
| 2026-09-16 | 111K | 243K | 45.8% | 2,770 |
| 2026-09-15 | 111K | 362K | 30.5% | 226 |
| 2026-09-14 | 284K | 504K | 56.4% | 800 |
| 2026-09-11 | 373K | 936K | 39.8% | 1,009 |
| 2026-09-10 | 282K | 496K | 56.9% | 9,342 |
| 2026-09-09 | 268K | 329K | 81.5% | 0 |
| 2026-09-08 | 254K | 337K | 75.4% | 0 |
| 2026-09-04 | 241K | 302K | 79.7% | 4 |
| 2026-09-03 | 159K | 279K | 56.8% | 6 |
| 2026-09-02 | 179K | 407K | 43.9% | 0 |
| 2026-09-01 | 118K | 244K | 48.6% | 179 |
| 2026-08-31 | 144K | 269K | 53.8% | 0 |
| 2026-08-28 | 76K | 114K | 66.4% | 11 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 11 September 2026, the fails-to-deliver balance in ICLR is 709 shares, up 692 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (15 June 2026) to 166,041 shares (1 June 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-11 | 709 | $165.69 | $117K |
| 2026-09-04 | 17 | $163.58 | $3K |
| 2026-09-02 | 756 | $161.40 | $122K |
| 2026-09-01 | 17 | $164.99 | $3K |
| 2026-08-31 | 151 | $170.02 | $26K |
| 2026-08-27 | 75 | $168.93 | $13K |
| 2026-08-26 | 7,659 | $168.91 | $1.3M |
| 2026-08-25 | 36 | $173.48 | $6K |
| 2026-08-20 | 757 | $172.49 | $131K |
| 2026-08-14 | 3,330 | $167.48 | $558K |
| 2026-08-10 | 199 | $164.51 | $33K |
| 2026-08-06 | 94 | $163.51 | $15K |
| 2026-08-04 | 512 | $158.41 | $81K |
| 2026-08-03 | 13,393 | $163.57 | $2.2M |
| 2026-07-27 | 7 | $165.76 | $1K |
| 2026-07-24 | 6 | $170.32 | $1K |
| 2026-07-23 | 1,522 | $167.28 | $255K |
| 2026-07-17 | 6,882 | $170.00 | $1.2M |
| 2026-07-16 | 129 | $172.08 | $22K |
| 2026-07-15 | 1,373 | $167.97 | $231K |
| 2026-07-14 | 17 | $166.10 | $3K |
| 2026-07-09 | 15 | $165.47 | $2K |
| 2026-06-30 | 201 | $172.99 | $35K |
| 2026-06-25 | 163 | $158.17 | $26K |
| 2026-06-22 | 883 | $146.00 | $129K |
| 2026-06-18 | 1,503 | $143.27 | $215K |
| 2026-06-15 | 1 | $146.18 | $146 |
| 2026-06-12 | 480 | $149.92 | $72K |
| 2026-06-08 | 80 | $149.45 | $12K |
| 2026-06-01 | 166,041 | $136.07 | $22.6M |
Insider trades
SEC Form 4, newest first. JSONInsiders at ICLR reported 37 open-market sells worth $4.0M in the last 90 days and no open-market buys. Latest filing: Murphy Ronan Martin (Director) on 2026-09-17.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-09-17 | Murphy Ronan Martin | Director | Sell | 5K | $175.00 | $876K | 4K |
| 2026-09-17 | Murphy Ronan Martin | Director | Option exercise | 5K | $125.74 | $629K | 9K |
| 2026-09-17 | McCague Eugene Pacelli | Director | Sell | 3K | $175.00 | $570K | 4K |
| 2026-09-17 | McCague Eugene Pacelli | Director | Option exercise | 3K | $125.74 | $409K | 7K |
| 2026-09-16 | CLIMAX JOHN DR | Director | Sell | 5K | $175.00 | $876K | 2K |
| 2026-09-16 | CLIMAX JOHN DR | Director | Option exercise | 5K | $125.74 | $629K | 7K |
| 2026-08-11 | Clerkin Nigel Bernard John | Chief Financial Officer | Sell | 180 | $165.51 | $30K | 6K |
| 2026-08-11 | Clerkin Nigel Bernard John | Chief Financial Officer | Sell | 2K | $164.47 | $262K | 6K |
| 2026-08-11 | Clerkin Nigel Bernard John | Chief Financial Officer | Sell | 259 | $163.77 | $42K | 8K |
| 2026-08-11 | Clerkin Nigel Bernard John | Chief Financial Officer | Sell | 237 | $162.72 | $39K | 8K |
| 2026-08-11 | CLIMAX JOHN DR | Director | Sell | 67 | $165.51 | $11K | 2K |
| 2026-08-11 | CLIMAX JOHN DR | Director | Sell | 591 | $164.47 | $97K | 2K |
| 2026-08-11 | CLIMAX JOHN DR | Director | Sell | 95 | $163.77 | $16K | 3K |
| 2026-08-11 | CLIMAX JOHN DR | Director | Sell | 88 | $162.72 | $14K | 3K |
| 2026-08-11 | Grais Linda | Director | Sell | 67 | $165.51 | $11K | 6K |
| 2026-08-11 | Grais Linda | Director | Sell | 590 | $164.47 | $97K | 6K |
| 2026-08-11 | Grais Linda | Director | Sell | 97 | $163.77 | $16K | 7K |
| 2026-08-11 | Grais Linda | Director | Sell | 87 | $162.72 | $14K | 7K |
| 2026-08-11 | McCague Eugene Pacelli | Director | Sell | 67 | $165.51 | $11K | 4K |
| 2026-08-11 | McCague Eugene Pacelli | Director | Sell | 590 | $164.47 | $97K | 4K |
| 2026-08-11 | McCague Eugene Pacelli | Director | Sell | 96 | $163.77 | $16K | 4K |
| 2026-08-11 | McCague Eugene Pacelli | Director | Sell | 88 | $162.72 | $14K | 5K |
| 2026-08-11 | Murphy Ronan Martin | Director | Sell | 67 | $165.51 | $11K | 4K |
| 2026-08-11 | Murphy Ronan Martin | Director | Sell | 590 | $164.47 | $97K | 4K |
| 2026-08-11 | Murphy Ronan Martin | Director | Sell | 96 | $163.77 | $16K | 5K |
| 2026-08-11 | Murphy Ronan Martin | Director | Sell | 88 | $162.72 | $14K | 5K |
| 2026-08-11 | Murray Ciaran | Director | Sell | 212 | $165.51 | $35K | 20K |
| 2026-08-11 | Murray Ciaran | Director | Sell | 2K | $164.47 | $309K | 21K |
| 2026-08-11 | Murray Ciaran | Director | Sell | 305 | $163.77 | $50K | 23K |
| 2026-08-11 | Murray Ciaran | Director | Sell | 280 | $162.72 | $46K | 23K |
| 2026-08-11 | O'Neill Julie | Director | Sell | 73 | $165.51 | $12K | 4K |
| 2026-08-11 | O'Neill Julie | Director | Sell | 642 | $164.47 | $106K | 4K |
| 2026-08-11 | O'Neill Julie | Director | Sell | 105 | $163.77 | $17K | 4K |
| 2026-08-11 | O'Neill Julie | Director | Sell | 95 | $162.72 | $15K | 4K |
| 2026-08-11 | Whitaker Anne Clem | Director | Sell | 67 | $165.51 | $11K | 891 |
| 2026-08-11 | Whitaker Anne Clem | Director | Sell | 590 | $164.47 | $97K | 958 |
| 2026-08-11 | Whitaker Anne Clem | Director | Sell | 96 | $163.77 | $16K | 2K |
| 2026-08-11 | Whitaker Anne Clem | Director | Sell | 88 | $162.72 | $14K | 2K |
| 2026-08-10 | Balfe Barry Edward | Chief Executive Officer | Sell | 78 | $165.14 | $13K | 5K |
| 2026-08-10 | Balfe Barry Edward | Chief Executive Officer | Sell | 304 | $163.80 | $50K | 5K |
| 2026-08-10 | Clerkin Nigel Bernard John | Chief Financial Officer | Option exercise | 3K | price not stated in the filing | not stated | 8K |
| 2026-08-10 | Clerkin Nigel Bernard John | Chief Financial Officer | Option exercise | 918 | price not stated in the filing | not stated | 5K |
| 2026-08-10 | CLIMAX JOHN DR | Director | Option exercise | 2K | price not stated in the filing | not stated | 3K |
| 2026-08-10 | Grais Linda | Director | Option exercise | 2K | price not stated in the filing | not stated | 7K |
| 2026-08-10 | McCague Eugene Pacelli | Director | Option exercise | 2K | price not stated in the filing | not stated | 5K |
| 2026-08-10 | Murphy Ronan Martin | Director | Option exercise | 2K | price not stated in the filing | not stated | 5K |
| 2026-08-10 | Murray Ciaran | Director | Option exercise | 3K | price not stated in the filing | not stated | 23K |
| 2026-08-10 | O'Neill Julie | Director | Option exercise | 2K | price not stated in the filing | not stated | 4K |
| 2026-08-10 | Whitaker Anne Clem | Director | Option exercise | 2K | price not stated in the filing | not stated | 2K |
| 2026-08-07 | Balfe Barry Edward | Chief Executive Officer | Option exercise | 728 | price not stated in the filing | not stated | 5K |
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. JSON16 Form 144 notices on file for ICLR worth $8.2M at the prices reported; 12 in the last 90 days worth $4.0M. Latest: RONAN MARTIN MURPHY filed on 2026-09-17 to sell 5,005 shares ($876K) from 2026-09-17.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-09-17 | RONAN MARTIN MURPHYDirector | 5K | $876K | 0.006% | 2026-09-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-09-17 | EUGENE PACELLI MCCAGUEDirector | 3K | $570K | 0.004% | 2026-09-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-09-16 | JOHN CLIMAXDirector | 5K | $876K | 0.006% | 2026-09-16 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-11 | ANNE WHITAKERDirector | 841 | $138K | 0.001% | 2026-08-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-11 | EUGENE PACELLI MCCAGUEDirector | 841 | $138K | 0.001% | 2026-08-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-11 | RONAN MARTIN MURPHYDirector | 841 | $138K | 0.001% | 2026-08-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-11 | JULIE ANN O'NEILLDirector | 915 | $150K | 0.001% | 2026-08-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-11 | CIARAN MURRAYDirector | 3K | $440K | 0.003% | 2026-08-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-11 | LINDA SUE GRAISDirector | 841 | $138K | 0.001% | 2026-08-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-11 | NIGEL CLERKINOfficer | 2K | $372K | 0.003% | 2026-08-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-11 | JOHN CLIMAXDirector | 841 | $138K | 0.001% | 2026-08-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-10 | BARRY EDWARD BALFEOfficer | 382 | $63K | 0.000% | 2026-08-10 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-09 | BARRY EDWARD BALFEOfficer | 3K | $301K | 0.004% | 2026-03-09 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-04 | BARRY EDWARD BALFEOfficer | 566 | $62K | 0.001% | 2026-03-04 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-03 | NIGEL CLERKINOfficer | 1K | $249K | 0.002% | 2025-11-03 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-02 | STEPHEN CUTLEROfficer | 19K | $3.6M | 0.024% | 2025-10-02 | Morgan Stanley Smith Barney LLC Executive Financial Services |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON14 holders report 5% or more of ICLR in their latest filing, all on Schedule 13G (passive). The largest reported stake is Artisan Partners Asset Management Inc. at 10.9% of the class (8,361,303 shares), filed 2026-03-06 for an event on 2026-02-27.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-13 | 13G/Ano. 1 | Invesco Ltd.parent holding company, investment adviser | 5.3M | 6.9% | 2026-06-30 |
| 2026-08-06 | 13G/Ano. 1 | FMR LLCparent holding company | 5.3M | 6.9% | 2026-06-30 |
| 2026-08-06 | 13G/Ano. 1 | Abigail P. Johnsonindividual | 5.3M | 6.9% | 2026-06-30 |
| 2026-05-15 | 13G/Ano. 2 | ORBIS INVESTMENT MANAGEMENT LTDnon-US institution | 0 | 0.0% | 2026-03-31 |
| 2026-05-15 | 13G/Ano. 2 | Allan Gray Australia Pty Ltdnon-US institution | 0 | 0.0% | 2026-03-31 |
| 2026-05-15 | 13G/Ano. 1 | Wellington Investment Advisors Holdings LLPparent holding company | 5.9M | 7.7% | 2026-03-31 |
| 2026-05-15 | 13G/Ano. 1 | Wellington Management Group LLPparent holding company | 5.9M | 7.7% | 2026-03-31 |
| 2026-05-15 | 13G/Ano. 1 | Wellington Group Holdings LLPparent holding company | 5.9M | 7.7% | 2026-03-31 |
| 2026-05-15 | 13G/Ano. 1 | Wellington Management Company LLPinvestment adviser | 5.9M | 6.7% | 2026-03-31 |
| 2026-05-15 | 13G | Harris Associates, Inc.corporation | 4.4M | 5.7% | 2026-03-31 |
| 2026-05-15 | 13G | HARRIS ASSOCIATES L Pinvestment adviser | 4.4M | 5.7% | 2026-03-31 |
| 2026-03-06 | 13G/Ano. 2 | Artisan Partners Asset Management Inc.parent holding company | 8.4M | 10.9% | 2026-02-27 |
| 2026-03-06 | 13G/Ano. 2 | Artisan Partners Holdings LPparent holding company | 8.4M | 10.9% | 2026-02-27 |
| 2026-03-06 | 13G/Ano. 2 | Artisan Investments GP LLCparent holding company | 8.4M | 10.9% | 2026-02-27 |
| 2026-03-06 | 13G/Ano. 2 | Artisan Partners Limited Partnershipinvestment adviser | 8.4M | 10.9% | 2026-02-27 |
| 2026-03-06 | 13G/Ano. 2 | Artisan Partners Funds, Inc.insurance company | 6.4M | 8.4% | 2026-02-27 |
13F holders
Tracked managers holding ICLR at their latest 13F. JSON5 of the 30 tracked managers held ICLR at their latest 13F, $334.3M in total at quarter-end prices. D. E. Shaw & Co. is the largest at $235.7M (0.1% of its portfolio) as of 2026-06-30. Over the prior quarter 3 added shares and 2 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| D. E. Shaw & Co. | 2026-06-30 | 1.4M | $235.7M | 0.11% | +159K |
| Point72 Asset Management | 2026-06-30 | 366K | $63.6M | 0.07% | +356K |
| Citadel Advisors | 2026-06-30 | 149K | $25.8M | 0.00% | -103K |
| Millennium Management | 2026-06-30 | 48K | $8.4M | 0.00% | -2K |
| Renaissance Technologies | 2026-06-30 | 5K | $782K | 0.00% | new |
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. JSONIn Q2 FY 2026 (quarter ended 2026-06-30) ICON reported revenue of $2.06B, up 1.2% from the same quarter a year earlier, and net income of $72.6M (0.94 diluted EPS). In FY 2025 it generated $1.04B of operating cash flow and spent $750.0M on buybacks. As of 2026-06-30, cash was $928.4M against $2.11B of debt.
- Cash
- $928.4M
- Debt
- $2.11B
- Equity
- $9.38B
- Total assets
- $16.40B
- Shares outstanding
- 76,567,325
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q2 FY 2026 | 2026-06-30 | $2.06B | $72.6M | 3.5% | 0.94 |
| Q1 FY 2026 | 2026-03-31 | $2.03B | $104.8M | 5.2% | 1.36 |
| Q4 FY 2025derived | 2025-12-31 | $2.11B | $149.2M | 7.1% | n/a |
| Q3 FY 2025 | 2025-09-30 | $2.08B | -$284.2M | -13.6% | -3.67 |
| Q2 FY 2025 | 2025-06-30 | $2.04B | $203.5M | 10.0% | 2.56 |
| Q1 FY 2025 | 2025-03-31 | $2.02B | $160.8M | 8.0% | 1.99 |
| Q4 FY 2024derived | 2024-12-31 | $2.06B | $294.7M | 14.3% | n/a |
| Q3 FY 2024 | 2024-09-30 | $2.04B | $213.3M | 10.4% | 2.56 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | $8.25B | $229.3M | $1.04B | $174.2M | $750.0M | n/a |
| FY 2024 | 2024-12-31 | $8.19B | $739.1M | $1.29B | $168.1M | $500.0M | n/a |
| FY 2023 | 2023-12-31 | $8.05B | $554.2M | $1.16B | $140.7M | $0 | n/a |
| FY 2022 | 2022-12-31 | $7.74B | $505.3M | $563.3M | $142.2M | $100.0M | n/a |
| FY 2021 | 2021-12-31 | $5.48B | $153.2M | $829.1M | $93.8M | $0 | n/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 the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2025-12-31 from the cover page.
What this page is
ICON 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 ICON (ICLR), SEC CIK 1060955, listed on Nasdaq, classified by the SEC as services-commercial physical & biological research. 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 2026-09-11.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 2026-09-17.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 2026-08-13.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
- Financials
- SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.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 2026-09-17.JSON and CSV
- Company record
- EDGAR filing index for CIK 1060955Ticker, 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.
Other companies the SEC classifies as services-commercial physical & biological research
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Frequently Asked Questions
How much of ICLR is sold short?
What is ICLR's daily short volume?
Does ICLR have fails to deliver?
Are ICLR insiders buying or selling?
Have ICLR insiders filed to sell?
Who owns 5% or more of ICLR?
What did ICLR report last quarter?
Which tracked 13F managers own ICLR?
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.