MAGNITE, INC. (MGNI)
Every FINRA and SEC series the site collects for MAGNITE, 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 services-computer programming, data processing, etc..
11.2M
Short interest
settlement 2026-08-14
3.1
Days to cover
-4.0% vs prior
42.7%
Short share of volume
2026-09-11
77,878
Fails to deliver
settlement 2026-08-14
-$21.2M
Insider flow, 90 days
0 buys, 28 sells
As of 2026-09-11.
Short interest
FINRA, twice a month; the last 12 months shown, all 48 settlements in the JSONAs of 14 August 2026, short interest in MGNI is 11,178,680 shares, down 2,427,453 shares over the last month. Over the last 48 readings it ranged from 7,820,838 shares (15 November 2024) to 20,580,909 shares (30 June 2025). At the reported average volume of 3.6M shares a day that is 3.1 days to cover.
Embed this chartfree, with the attribution line it carries
<iframe src="https://xoomar.com/embed/stocks/mgni" 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 |
|---|---|---|---|---|
| 2026-08-14 | 11,178,680 | -4.0% | 3,631,991 | 3.08 |
| 2026-07-31 | 11,638,779 | -14.5% | 2,093,457 | 5.56 |
| 2026-07-15 | 13,606,133 | -7.5% | 2,541,944 | 5.35 |
| 2026-06-30 | 14,712,876 | +9.6% | 4,082,869 | 3.60 |
| 2026-06-15 | 13,419,271 | +10.6% | 2,851,031 | 4.71 |
| 2026-05-29 | 12,137,723 | -0.7% | 2,285,307 | 5.31 |
| 2026-05-15 | 12,220,217 | +0.6% | 3,384,256 | 3.61 |
| 2026-04-30 | 12,144,807 | +7.1% | 2,027,845 | 5.99 |
| 2026-04-15 | 11,336,377 | +4.5% | 1,720,429 | 6.59 |
| 2026-03-31 | 10,847,278 | -1.0% | 2,053,012 | 5.28 |
| 2026-03-13 | 10,961,808 | -4.7% | 1,898,079 | 5.78 |
| 2026-02-27 | 11,500,688 | -10.9% | 2,595,240 | 4.43 |
| 2026-02-13 | 12,911,016 | -8.3% | 2,973,969 | 4.34 |
| 2026-01-30 | 14,077,922 | -7.8% | 2,028,191 | 6.94 |
| 2026-01-15 | 15,271,939 | +10.0% | 2,304,776 | 6.63 |
| 2025-12-31 | 13,885,617 | +3.8% | 1,810,160 | 7.67 |
| 2025-12-15 | 13,377,375 | +5.7% | 2,414,077 | 5.54 |
| 2025-11-28 | 12,654,687 | -19.0% | 2,695,572 | 4.69 |
| 2025-11-14 | 15,629,600 | +1.6% | 3,959,355 | 3.95 |
| 2025-10-31 | 15,385,183 | +10.6% | 2,261,637 | 6.80 |
| 2025-10-15 | 13,915,655 | -4.9% | 2,967,791 | 4.69 |
| 2025-09-30 | 14,629,003 | +1.2% | 3,311,341 | 4.42 |
| 2025-09-15 | 14,453,264 | -0.5% | 2,832,399 | 5.10 |
| 2025-08-29 | 14,531,502 | -2.9% | 3,155,065 | 4.61 |
Daily short volume
FINRA Reg SHO, last 60 sessions. JSONAs of 11 September 2026, the short share of MGNI volume is 42.7%, up 8.6 points over the last five sessions. Over the last 52 readings it ranged from 20.8% (14 July 2026) to 56.5% (24 July 2026). The latest reading is 7.7 points above the 30-session average of 35.0%, on 416K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-09-11 | 177K | 416K | 42.7% | 55 |
| 2026-09-10 | 169K | 378K | 44.7% | 0 |
| 2026-09-09 | 213K | 537K | 39.7% | 96 |
| 2026-09-08 | 296K | 665K | 44.5% | 13,375 |
| 2026-09-04 | 214K | 451K | 47.4% | 0 |
| 2026-09-03 | 416K | 1.2M | 34.1% | 1,652 |
| 2026-09-02 | 1.2M | 3.0M | 39.2% | 1,035 |
| 2026-09-01 | 178K | 542K | 32.8% | 1,477 |
| 2026-08-31 | 149K | 530K | 28.1% | 3,603 |
| 2026-08-28 | 204K | 675K | 30.2% | 2,495 |
| 2026-08-27 | 254K | 816K | 31.1% | 611 |
| 2026-08-26 | 173K | 621K | 27.9% | 2,576 |
| 2026-08-25 | 292K | 973K | 30.0% | 700 |
| 2026-08-24 | 164K | 589K | 27.9% | 1,053 |
| 2026-08-21 | 172K | 631K | 27.3% | 0 |
| 2026-08-20 | 357K | 980K | 36.4% | 4,637 |
| 2026-08-19 | 339K | 828K | 40.9% | 464 |
| 2026-08-18 | 365K | 1.1M | 32.7% | 6,611 |
| 2026-08-17 | 297K | 931K | 31.9% | 2,421 |
| 2026-08-14 | 475K | 1.9M | 25.1% | 6,550 |
| 2026-08-13 | 381K | 1.0M | 37.7% | 542 |
| 2026-08-12 | 280K | 740K | 37.8% | 9,408 |
| 2026-08-11 | 405K | 855K | 47.4% | 9,307 |
| 2026-08-10 | 296K | 1.1M | 27.5% | 13 |
| 2026-08-07 | 443K | 1.7M | 26.0% | 16,645 |
| 2026-08-06 | 982K | 4.4M | 22.2% | 9,897 |
| 2026-08-05 | 307K | 977K | 31.5% | 2,255 |
| 2026-08-04 | 312K | 1.3M | 24.2% | 167 |
| 2026-08-03 | 193K | 382K | 50.5% | 40,243 |
| 2026-07-31 | 259K | 508K | 51.0% | 0 |
Fails to deliver
SEC, by settlement date. JSONAs of 14 August 2026, the fails-to-deliver balance in MGNI is 77,878 shares, up 77,256 shares over the last settlement date. Over the last 52 readings it ranged from 6 shares (9 July 2026) to 125,694 shares (29 June 2026).
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-08-14 | 77,878 | $24.58 | $1.9M |
| 2026-08-12 | 622 | $24.30 | $15K |
| 2026-08-10 | 8,727 | $24.72 | $216K |
| 2026-08-07 | 768 | $24.32 | $19K |
| 2026-08-06 | 11,000 | $20.67 | $227K |
| 2026-07-27 | 36,549 | $18.51 | $677K |
| 2026-07-24 | 43,227 | $17.92 | $775K |
| 2026-07-23 | 100 | $18.30 | $2K |
| 2026-07-22 | 100 | $19.13 | $2K |
| 2026-07-21 | 19,062 | $18.97 | $362K |
| 2026-07-20 | 21,808 | $19.00 | $414K |
| 2026-07-09 | 6 | $20.31 | $122 |
| 2026-07-07 | 761 | $20.84 | $16K |
| 2026-07-06 | 5,843 | $20.38 | $119K |
| 2026-07-01 | 121 | $18.98 | $2K |
| 2026-06-29 | 125,694 | $18.73 | $2.4M |
| 2026-06-24 | 28,679 | $18.00 | $516K |
| 2026-06-22 | 30,847 | $17.89 | $552K |
| 2026-06-15 | 927 | $16.25 | $15K |
| 2026-06-08 | 6,632 | $14.68 | $97K |
| 2026-06-05 | 1,900 | $14.86 | $28K |
| 2026-06-04 | 8,624 | $14.45 | $125K |
| 2026-06-03 | 2,066 | $14.85 | $31K |
| 2026-06-02 | 1,900 | $15.38 | $29K |
| 2026-06-01 | 1,906 | $14.33 | $27K |
| 2026-04-30 | 1,900 | $12.92 | $25K |
| 2026-04-29 | 1,900 | $12.97 | $25K |
| 2026-04-28 | 1,900 | $13.03 | $25K |
| 2026-04-27 | 1,900 | $12.98 | $25K |
| 2026-04-24 | 2,942 | $12.53 | $37K |
Insider trades
SEC Form 4, newest first, 50 of 100 shown. JSONInsiders at MGNI reported 28 open-market sells worth $21.2M 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: Evans Katie Seitz (See Remarks) on 2026-09-11.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-09-11 | Evans Katie Seitz | See Remarks | Sell | 14K | $24.00 | $336K | 442K |
| 2026-09-10 | Saltz Aaron | CHIEF LEGAL OFFICER | Sell | 40K | $23.41 | $936K | 224K |
| 2026-09-10 | Caine Paul | n/a | Sell | 5K | $23.53 | $118K | 145K |
| 2026-09-02 | Buonasera David | CHIEF TECHNOLOGY OFFICER | Sell | 1K | $25.00 | $26K | 246K |
| 2026-09-01 | Buonasera David | CHIEF TECHNOLOGY OFFICER | Sell | 5K | $23.42 | $126K | 247K |
| 2026-08-28 | Harden Sarah Patricia | n/a | Sell | 18K | $24.00 | $442K | 115K |
| 2026-08-26 | Harden Sarah Patricia | n/a | Sell | 31K | $23.31 | $712K | 133K |
| 2026-08-18 | Buckley Sean Patrick | See Remarks | Sell | 3K | $25.00 | $69K | 293K |
| 2026-08-17 | Buckley Sean Patrick | See Remarks | Sell | 8K | $24.31 | $201K | 296K |
| 2026-08-15 | Saltz Aaron | CHIEF LEGAL OFFICER | Tax withholding | 6K | $24.73 | $139K | 264K |
| 2026-08-15 | Gephart Brian | CHIEF ACCOUNTING OFFICER | Tax withholding | 4K | $24.73 | $94K | 102K |
| 2026-08-15 | Evans Katie Seitz | See Remarks | Tax withholding | 11K | $24.73 | $277K | 486K |
| 2026-08-15 | Day David | CHIEF FINANCIAL OFFICER | Tax withholding | 14K | $24.73 | $350K | 453K |
| 2026-08-15 | Buonasera David | CHIEF TECHNOLOGY OFFICER | Tax withholding | 8K | $24.73 | $200K | 253K |
| 2026-08-15 | Buckley Sean Patrick | See Remarks | Tax withholding | 12K | $24.73 | $290K | 304K |
| 2026-08-15 | BARRETT MICHAEL G. | CEO | Tax withholding | 10K | $24.73 | $257K | 393K |
| 2026-08-14 | Caine Paul | n/a | Sell | 8K | $25.00 | $188K | 150K |
| 2026-08-13 | Day David | CHIEF FINANCIAL OFFICER | Gift | 26K | $0.00 | $0 | 467K |
| 2026-08-10 | Lam Rachel | n/a | Sell | 10K | $24.16 | $242K | 231K |
| 2026-08-10 | Gephart Brian | CHIEF ACCOUNTING OFFICER | Sell | 12K | $24.68 | $308K | 106K |
| 2026-08-10 | Caine Paul | n/a | Sell | 5K | $24.35 | $122K | 157K |
| 2026-08-06 | Knopper Douglas S | n/a | Sell | 37K | $22.72 | $848K | 88K |
| 2026-08-06 | Evans Katie Seitz | See Remarks | Sell | 20K | $24.00 | $480K | 497K |
| 2026-08-06 | Evans Katie Seitz | See Remarks | Option exercise | 20K | $5.16 | $103K | 517K |
| 2026-08-06 | Buonasera David | CHIEF TECHNOLOGY OFFICER | Sell | 871 | $25.00 | $22K | 261K |
| 2026-08-06 | Buonasera David | CHIEF TECHNOLOGY OFFICER | Sell | 3K | $24.00 | $62K | 262K |
| 2026-08-06 | Buonasera David | CHIEF TECHNOLOGY OFFICER | Sell | 4K | $22.81 | $95K | 264K |
| 2026-08-06 | Buckley Sean Patrick | See Remarks | Sell | 19K | $23.00 | $442K | 316K |
| 2026-08-06 | Buckley Sean Patrick | See Remarks | Sell | 48K | $25.09 | $1.2M | 335K |
| 2026-08-06 | Buckley Sean Patrick | See Remarks | Option exercise | 29K | $13.90 | $399K | 383K |
| 2026-08-06 | BARRETT MICHAEL G. | CEO | Sell | 294K | $22.72 | $6.7M | 403K |
| 2026-08-06 | BARRETT MICHAEL G. | CEO | Option exercise | 294K | $5.80 | $1.7M | 697K |
| 2026-07-15 | BARRETT MICHAEL G. | CEO | Sell | 39K | $20.35 | $785K | 403K |
| 2026-07-15 | BARRETT MICHAEL G. | CEO | Option exercise | 39K | $5.80 | $224K | 442K |
| 2026-07-10 | Caine Paul | n/a | Sell | 5K | $20.64 | $103K | 162K |
| 2026-07-07 | Buonasera David | CHIEF TECHNOLOGY OFFICER | Sell | 1K | $21.00 | $26K | 268K |
| 2026-07-07 | Buckley Sean Patrick | See Remarks | Sell | 19K | $21.03 | $404K | 354K |
| 2026-06-29 | BARRETT MICHAEL G. | CEO | Sell | 75K | $19.50 | $1.5M | 403K |
| 2026-06-29 | BARRETT MICHAEL G. | CEO | Option exercise | 75K | $5.80 | $435K | 478K |
| 2026-06-16 | BARRETT MICHAEL G. | CEO | Sell | 100K | $17.50 | $1.8M | 403K |
| 2026-06-16 | BARRETT MICHAEL G. | CEO | Option exercise | 100K | $5.80 | $580K | 503K |
| 2026-06-15 | BARRETT MICHAEL G. | CEO | Sell | 179K | $16.59 | $3.0M | 403K |
| 2026-06-15 | BARRETT MICHAEL G. | CEO | Option exercise | 179K | $5.80 | $1.0M | 582K |
| 2026-06-10 | PEARSON DAVID T. | n/a | Sell | 11K | $15.65 | $168K | 79K |
| 2026-06-10 | Knopper Douglas S | n/a | Sell | 11K | $15.73 | $169K | 163K |
| 2026-06-08 | Yu Diane | n/a | Grant | 14K | $0.00 | $0 | 81K |
| 2026-06-08 | Spillane Robert F | n/a | Grant | 14K | $0.00 | $0 | 58K |
| 2026-06-08 | Rossman James | n/a | Grant | 14K | $0.00 | $0 | 107K |
| 2026-06-08 | PEARSON DAVID T. | n/a | Grant | 14K | $0.00 | $0 | 90K |
| 2026-06-08 | Lam Rachel | n/a | Grant | 14K | $0.00 | $0 | 241K |
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. JSON20 Form 144 notices on file for MGNI worth $15.4M at the prices reported; 20 in the last 90 days worth $15.4M. Latest: KATHERYN EVANS filed on 2026-09-11 to sell 13,997 shares ($336K) from 2026-09-11.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-09-11 | KATHERYN EVANSOfficer | 14K | $336K | 0.010% | 2026-09-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-09-10 | AARON SALTZOfficer | 60K | $1.4M | 0.042% | 2026-09-10 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-09-10 | PAUL CAINEDirector | 10K | $236K | 0.007% | 2026-09-10 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-09-09 | KATHERYN EVANSOfficer | 11K | $260K | 0.008% | 2026-09-09 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-09-08 | KATHERYN EVANSOfficer | 32K | $763K | 0.023% | 2026-09-08 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-09-02 | DAVID BUONASERAOfficer | 1K | $26K | 0.001% | 2026-09-02 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-09-01 | DAVID BUONASERAOfficer | 5K | $126K | 0.004% | 2026-09-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-28 | SARAH PATRICIA HARDENDirector | 18K | $442K | 0.013% | 2026-08-28 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-26 | SARAH PATRICIA HARDENDirector | 31K | $712K | 0.021% | 2026-08-26 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-18 | SEAN BUCKLEYOfficer | 3K | $67K | 0.002% | 2026-08-18 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-17 | SEAN BUCKLEYOfficer | 8K | $205K | 0.006% | 2026-08-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-10 | RACHEL LAMDirector | 10K | $242K | 0.007% | 2026-08-10 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-10 | BRIAN GEPHARTOfficer | 12K | $308K | 0.009% | 2026-08-10 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-06 | DOUGLAS KNOPPERDirector | 19K | $395K | 0.013% | 2026-08-06 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-06 | Douglas S. Knopper & Abigail L. Knopper TTEES of the Knopper Joint Mgmt Trust 11/15/13Director | 18K | $376K | 0.013% | 2026-08-06 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-06 | KATHERYN EVANSOfficer | 20K | $480K | 0.014% | 2026-08-06 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-06 | DAVID BUONASERAOfficer | 8K | $179K | 0.005% | 2026-08-06 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-06 | SEAN BUCKLEYOfficer | 67K | $1.4M | 0.047% | 2026-08-06 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-06 | MICHAEL G BARRETTOfficer, Director | 294K | $6.7M | 0.205% | 2026-08-06 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-07-15 | MICHAEL G BARRETTOfficer, Director | 39K | $786K | 0.027% | 2026-07-15 | Morgan Stanley Smith Barney LLC Executive Financial Services |
Large holders (13D and 13G)
One row per reporting person, newest filing first. JSON5 holders above 5% have filed on MGNI, all on Schedule 13G (passive). The largest reported stake is FMR LLC at 5.4% of the class (7,759,426 shares), filed 2026-08-06 for an event on 2026-06-30.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-13 | 13G/Ano. 1 | Wellington Management Group LLPparent holding company | 6.0M | 4.2% | 2026-06-30 |
| 2026-08-13 | 13G/Ano. 1 | Wellington Group Holdings LLPparent holding company | 6.0M | 4.2% | 2026-06-30 |
| 2026-08-13 | 13G/Ano. 1 | Wellington Investment Advisors Holdings LLPparent holding company | 6.0M | 4.2% | 2026-06-30 |
| 2026-08-06 | 13G | FMR LLCparent holding company | 7.8M | 5.4% | 2026-06-30 |
| 2026-08-06 | 13G | Abigail P. Johnsonindividual | 7.8M | 5.4% | 2026-06-30 |
13F holders
Tracked managers holding MGNI at their latest 13F. JSON5 of the 30 tracked managers held MGNI at their latest 13F, $56.9M in total at quarter-end prices. Citadel Advisors is the largest at $37.6M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 1 added shares and 4 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Citadel Advisors | 2026-06-30 | 2.0M | $37.6M | 0.00% | -218K |
| Millennium Management | 2026-06-30 | 765K | $14.5M | 0.01% | -470K |
| AQR Capital Management | 2026-06-30 | 177K | $3.4M | 0.00% | +55K |
| Two Sigma Investments | 2026-06-30 | 43K | $810K | 0.00% | -352K |
| D. E. Shaw & Co. | 2026-06-30 | 36K | $678K | 0.00% | -27.6M |
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 2026 (quarter ended 2026-06-30) MAGNITE, INC. reported revenue of $192.8M, up 11.2% from the same quarter a year earlier, and net income of $19.4M (0.13 diluted EPS). In FY 2025 it generated $236.2M of operating cash flow and spent $46.3M on buybacks. As of 2026-06-30, cash was $332.6M against $350.4M of debt.
- Cash
- $332.6M
- Debt
- $350.4M
- Equity
- $936.3M
- Total assets
- $3.03B
- Shares outstanding
- 143,424,157
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q2 2026 | 2026-06-30 | $192.8M | $19.4M | 10.0% | 0.13 |
| Q1 2026 | 2026-03-31 | $164.4M | $4.4M | 2.7% | 0.03 |
| Q4 2025derived | 2025-12-31 | $205.4M | n/a | n/a | n/a |
| Q3 2025 | 2025-09-30 | $179.5M | $20.1M | 11.2% | 0.13 |
| Q2 2025 | 2025-06-30 | $173.3M | $11.1M | 6.4% | 0.08 |
| Q1 2025 | 2025-03-31 | $155.8M | -$9.6M | -6.2% | -0.07 |
| Q4 2024derived | 2024-12-31 | $194.0M | n/a | n/a | n/a |
| Q3 2024 | 2024-09-30 | $162.0M | $5.2M | 3.2% | 0.04 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | $714.0M | n/a | $236.2M | $70.5M | $46.3M | n/a |
| FY 2024 | 2024-12-31 | $668.2M | n/a | $235.2M | $32.8M | $14.6M | n/a |
| FY 2023 | 2023-12-31 | $619.7M | n/a | $214.4M | $26.8M | $0 | n/a |
| FY 2022 | 2022-12-31 | $577.1M | n/a | $192.6M | $30.8M | $15.7M | n/a |
| FY 2021 | 2021-12-31 | $468.4M | n/a | $126.6M | $17.7M | $6.0M | 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 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 2026-07-29 from the cover page.
What this page is
MAGNITE, 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 MAGNITE, INC. (MGNI), SEC CIK 1595974, listed on Nasdaq, classified by the SEC as services-computer programming, data processing, etc.. 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
- Planned sales
- SEC EDGAR Form 144EDGAR read every 30 minutes; a notice is filed on or before the sell order. Latest 2026-09-11.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 2026-08-13.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 1595974Ticker, 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 companies the SEC classifies as services-computer programming, data processing, etc.
- APPAppLovin Corp
- GOOGLAlphabet Inc.
- METAMeta Platforms, Inc.
- TEMTempus AI, Inc.
- ZMZoom Communications, Inc.
- ZIPZIPRECRUITER, INC.
- TRIPTripAdvisor, Inc.
- DVDoubleVerify Holdings, Inc.
- PINSPINTEREST, INC.
- DSPViant Technology Inc.
- EVEREverQuote, Inc.
- NXDRNextdoor Holdings, Inc.
- SNAPSnap Inc
- GRNDGrindr Inc.
- TTDTrade Desk, Inc.
- PUBMPubMatic, Inc.
- BMBLBumble Inc.
- TBLATaboola.com Ltd.
- HSTMHEALTHSTREAM INC
- DOCNDigitalOcean Holdings, Inc.
- FLUTFlutter Entertainment plc
- FDSFACTSET RESEARCH SYSTEMS INC
- BLNDBlend Labs, Inc.
- TEADTeads Holding Co.
Datasets
Frequently Asked Questions
How much of MGNI is sold short?
What is MGNI's daily short volume?
Does MGNI have fails to deliver?
Are MGNI insiders buying or selling?
Have MGNI insiders filed to sell?
Who owns more than 5% of MGNI?
What did MGNI report last quarter?
Which funds hold MGNI?
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.