XOOMAR

RadNet (RDNT)

RadNet on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as services-medical laboratories.

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9.4M

Short interest

settlement 2026-09-30

12.8

Days to cover

+0.9 days vs prior

38.3%

Short share of volume

2026-10-09

6,449

Fails to deliver

settlement 2026-09-14

Mon 9 Nov

Next earnings

estimated date

$0

Insider flow, 90 days

0 buys, 0 sells

As of 2026-10-09.

Short interest

FINRA, twice a month. The newest 24 settlements in the table, 48 in the chart. JSON

As of 30 September 2026, short interest in RDNT is 9,361,935 shares, down 578,954 shares over the last month. Over the last 48 readings it ranged from 3,475,065 shares (15 November 2024) to 10,425,092 shares (31 July 2026). At the reported average volume of 729K shares a day that is 12.8 days to cover.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-09-309,361,935-3.2%729,30012.84
2026-09-159,671,100-2.7%810,61111.93
2026-08-319,940,889+2.6%510,67819.47
2026-08-149,685,408-7.1%939,21010.31
2026-07-3110,425,092+3.9%615,84816.93
2026-07-1510,036,994+0.3%881,95511.38
2026-06-3010,004,424+13.4%1,267,7597.89
2026-06-158,819,394-3.8%768,65411.47
2026-05-299,170,015+1.3%477,38819.21
2026-05-159,053,285-0.9%1,126,0708.04
2026-04-309,131,968+3.7%844,97510.81
2026-04-158,808,033+1.7%662,49113.30
2026-03-318,658,853+4.2%818,52210.58
2026-03-138,310,494+7.7%1,084,8427.66
2026-02-277,715,356-0.3%727,13110.61
2026-02-137,739,264+4.8%775,6779.98
2026-01-307,385,859-1.1%595,41612.40
2026-01-157,465,239-5.5%709,96810.51
2025-12-317,896,807-2.5%1,137,9006.94
2025-12-158,103,361+10.1%852,2829.51
2025-11-287,361,600+3.8%857,9318.58
2025-11-147,089,968+4.5%993,7517.13
2025-10-316,787,903+2.0%636,08510.67
2025-10-156,652,229+4.7%586,19411.35

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 9 October 2026, the short share of RDNT volume is 38.3%, down 47.9 points over the last five sessions. Over the last 30 readings it ranged from 30.1% (1 September 2026) to 88.1% (18 September 2026). The latest reading is 25.2 points below the 30-session average of 63.5%, on 260K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-10-09100K260K38.3%0
2026-10-08171K318K53.8%0
2026-10-0765K102K63.5%32
2026-10-0659K80K73.8%0
2026-10-05133K186K71.2%0
2026-10-02199K231K86.2%136
2026-10-01191K342K55.8%318
2026-09-30135K199K67.9%20
2026-09-29139K187K74.4%0
2026-09-28115K166K69.6%0
2026-09-25142K231K61.3%0
2026-09-24178K348K51.0%1
2026-09-23138K226K61.1%0
2026-09-22176K283K62.2%500
2026-09-21141K282K50.1%48
2026-09-18198K225K88.1%0
2026-09-17177K217K81.7%3,766
2026-09-16173K274K63.2%0
2026-09-15403K591K68.2%0
2026-09-14254K611K41.6%0
2026-09-11182K212K85.9%31,801
2026-09-10249K295K84.4%64,961
2026-09-09127K205K62.0%0
2026-09-0886K137K62.5%0
2026-09-04139K213K65.4%0
2026-09-03222K370K60.1%0
2026-09-02143K337K42.5%0
2026-09-01110K365K30.1%0
2026-08-31164K197K83.0%0
2026-08-2872K152K47.1%0

Fails to deliver

SEC, the last 30 settlement dates with a fail. JSON

As of 14 September 2026, the fails-to-deliver balance in RDNT is 6,449 shares, up 3,844 shares over the last settlement date. Over the last 30 readings it ranged from 3 shares (4 June 2026) to 28,849 shares (30 July 2026).

SettlementShares failedPriceValue
2026-09-146,449$75.49$487K
2026-09-112,605$74.28$193K
2026-09-105,936$70.87$421K
2026-09-0910,166$71.97$732K
2026-08-271,027$76.47$79K
2026-08-2663$76.86$5K
2026-08-24212$76.82$16K
2026-08-112,692$77.28$208K
2026-08-06164$67.06$11K
2026-08-05504$69.22$35K
2026-08-0428,696$66.80$1.9M
2026-08-0341$63.78$3K
2026-07-3028,849$63.37$1.8M
2026-07-291,992$63.22$126K
2026-07-272,011$61.57$124K
2026-07-2170$60.68$4K
2026-07-202,165$62.19$135K
2026-07-17269$62.99$17K
2026-07-162,282$61.41$140K
2026-07-086$67.83$407
2026-07-062,229$68.75$153K
2026-07-016$61.67$370
2026-06-308,047$59.28$477K
2026-06-2920,871$60.74$1.3M
2026-06-2419,875$56.20$1.1M
2026-06-2215,663$53.74$842K
2026-06-182,006$52.82$106K
2026-06-16123$57.05$7K
2026-06-1138$58.16$2K
2026-06-043$51.87$156

Insider trades

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

No open-market insider trades were reported for RDNT in the last 90 days. The most recent filings are listed below. Latest filing: SWARTZ DAVID L (Director) on 2026-06-18.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-06-18SWARTZ DAVID LDirectorSell3K$53.89$145K177K
2026-06-16Wesdorp CornelisPres & CEO, Digital HealthSell5K$58.11$276K69K
2026-06-16Berger Howard GPresident, CEOGift90$0.00$020K
2026-06-15Forthuber Stephen MPres & CEO-Eastern OperationsSell24K$57.79$1.4M527K
2026-06-15Forthuber Stephen MPres & CEO-Eastern OperationsSell20K$58.61$1.2M507K
2026-06-02SWARTZ DAVID LDirectorGrant3K$0.00$0180K
2026-06-02SPURLOCK GREGORY E.DirectorGrant3K$0.00$08K
2026-06-02Levitt Lawrence LDirectorGrant3K$0.00$0168K
2026-06-02Jacobs Laura PastreDirectorGrant3K$0.00$030K
2026-05-05Berger Howard GPresident, CEOOption exercise26K$18.64$484K498K
2026-03-19Sorensen Alma GregoryChief Strategy OfficerGift7K$0.00$01.2M
2026-03-19Sorensen Alma GregoryChief Strategy OfficerSell100$63.59$6K1.2M
2026-03-19Sorensen Alma GregoryChief Strategy OfficerSell5K$62.82$336K1.2M
2026-03-19Sorensen Alma GregoryChief Strategy OfficerSell10K$61.84$591K1.2M
2026-03-18Sorensen Alma GregoryChief Strategy OfficerSell800$62.72$50K1.2M
2026-03-18Sorensen Alma GregoryChief Strategy OfficerSell14K$62.12$882K1.2M
2026-03-16Sorensen Alma GregoryChief Strategy OfficerTax withholding6K$61.72$365K1.2M
2026-03-10Sorensen Alma GregoryChief Strategy OfficerOption exercise17K$0.00$01.2M
2026-03-10Sorensen Alma GregoryChief Strategy OfficerOption exercise2K$0.00$01.2M
2026-03-10Sorensen Alma GregoryChief Strategy OfficerOption exercise12K$0.00$01.2M
2026-03-10Sorensen Alma GregoryChief Strategy OfficerOption exercise9K$0.00$01.2M
2026-03-10Sorensen Alma GregoryChief Strategy OfficerOption exercise7K$0.00$01.2M
2026-03-10Sorensen Alma GregoryChief Strategy OfficerOption exercise6K$0.00$01.2M
2026-03-10Sorensen Alma GregoryChief Strategy OfficerOption exercise5K$0.00$01.2M
2026-03-10Sorensen Alma GregoryChief Strategy OfficerOption exercise4K$0.00$01.2M
2026-03-03Wesdorp CornelisPres & CEO, Digital HealthGrant20K$0.00$074K
2026-03-03STOLPER MARKEVP, Chief Financial OfficerGrant18K$0.00$0122K
2026-03-03Sorensen Alma GregoryEVP, Chief Science OfficerGrant17K$0.00$01.2M
2026-03-03Patel MitalEVP of Fin Planning, CAOGrant21K$0.00$0200K
2026-03-03Murdock Michael NEVP, Mergers and AcquisitionsGrant7K$0.00$047K
2026-03-03Katz David JeffreyEVP and Chief Legal OfficerGrant19K$0.00$091K
2026-03-03HAMES NORMAN RPres and COO-West OperationsGrant3K$0.00$023K
2026-03-03HAMES NORMAN RPres and COO-West OperationsGrant22K$0.00$0261K
2026-03-03Forthuber Stephen MPres & COO-Eastern OperationsGrant22K$0.00$0551K
2026-03-03Berger Howard GPresident, CEOGrant124K$0.00$0472K
2025-12-10STOLPER MARKEVP, Chief Financial OfficerOption exercise36K$6.07$217K104K
2025-12-10Katz David JeffreyEVP and Chief Legal OfficerOption exercise3K$29.44$100K72K
2025-12-05Forthuber Stephen MPres & COO-Eastern OperationsSell2K$79.77$136K529K
2025-12-05Forthuber Stephen MPres & COO-Eastern OperationsSell12K$79.06$917K531K
2025-12-05Forthuber Stephen MPres & COO-Eastern OperationsSell32K$77.99$2.5M543K
2025-12-03Forthuber Stephen MPres & COO-Eastern OperationsOption exercise39K$6.07$238K574K
2025-12-03Patel MitalEVP of Fin Planning, CAOGift630$0.00$0180K
2025-11-25Levitt Lawrence LDirectorGift3K$0.00$0165K
2025-11-19Patel MitalEVP of Fin Planning, CAOSell15K$80.05$1.2M180K
2025-11-19Berger Howard GPresident, CEOOption exercise26K$18.64$484K348K
2025-11-19Berger Howard GPresident, CEOOption exercise104K$18.64$1.9M322K
2025-11-18Patel MitalEVP of Fin Planning, CAOSell10K$80.00$794K195K
2025-11-17Patel MitalEVP of Fin Planning, CAOSell25K$76.06$1.9M205K
2025-11-13Murdock Michael NEVP, Mergers and AcquisitionsGift3K$0.00$040K
2025-09-16Katz David JeffreyEVP and Chief Legal OfficerSell14K$74.44$1.0M68K

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. JSON

12 Form 144 notices on file for RDNT worth $17.8M at the prices reported; 0 in the last 90 days worth $0. Latest: DAVID SWARTZ filed on 2026-06-18 to sell 2,699 shares ($145K) from 2026-06-18.

FiledSellerSharesMarket valueOf outstandingSale fromBroker
2026-06-18DAVID SWARTZDirector3K$145K0.003%2026-06-18Morgan Stanley Smith Barney LLC Executive Financial Services
2026-06-16Cornelis WesdorpOfficer5K$269K0.006%2026-06-16Morgan Stanley Smith Barney LLC Executive Financial Services
2026-06-15STEPHEN M FORTHUBEROfficer44K$2.6M0.056%2026-06-15Morgan Stanley Smith Barney LLC Executive Financial Services
2026-03-19ALMA GREGORY SORENSEN &KRISTIINA HARRISON SORENSENDirector, Board of Director15K$933K0.019%2026-03-19Morgan Stanley Smith Barney LLC Executive Financial Services
2026-03-18ALMA GREGORY SORENSEN &KRISTIINA HARRISON SORENSENDirector, Board of Director15K$932K0.019%2026-03-18Morgan Stanley Smith Barney LLC Executive Financial Services
2026-03-18ALMA GREGORY SORENSENDirector, Board of Director6K$379K0.008%2026-03-16Morgan Stanley Smith Barney LLC Executive Financial Services
2025-12-05STEPHEN M FORTHUBEROfficer45K$3.5M0.058%2025-12-05Morgan Stanley Smith Barney LLC Executive Financial Services
2025-11-19Patel MitalOfficer25K$2.7M0.032%2025-11-19Raymond James & Associates
2025-11-19Patel MitalOfficer10K$794K0.013%2025-11-18Raymond James & Associates
2025-11-19Patel MitalOfficer25K$1.9M0.032%2025-11-17Raymond James & Associates
2025-09-16David Jeffrey KatzOfficer14K$1.0M0.018%2025-09-16The Charles Schwab Corporation
2025-09-15STOLPER MARKOfficer35K$2.6M0.046%2025-09-15Merrill Lynch

Large holders (13D and 13G)

One row per reporting person with its latest filing, newest first. JSON

5 holders report 5% or more of RDNT in their latest filing, all on Schedule 13G (passive). The largest reported stake is BlackRock, Inc. at 12.0% of the class (9,250,663 shares), filed 2025-10-17 for an event on 2025-09-30.

FiledFormHolderSharesOf classEvent
2026-08-1413G/Ano. 1RTW Investments, LPinvestment adviser, partnership4.8M6.2%2026-06-30
2026-08-1413G/Ano. 1Roderick Wongparent holding company, individual4.8M6.2%2026-06-30
2026-05-1513GT. Rowe Price Associates, Inc.investment adviser4.2M5.4%2026-03-31
2026-04-2913GVanguard Portfolio Managementinvestment adviser4.0M5.1%2026-03-31
2026-03-2713G/Ano. 8The Vanguard Groupinvestment adviser00.0%2026-03-13
2025-10-1713G/Ano. 8BlackRock, Inc.parent holding company, parent holding company9.3M12.0%2025-09-30

13F holders

Tracked managers holding RDNT at their latest 13F. JSON

4 of the 30 tracked managers held RDNT at their latest 13F, $69.3M in total at quarter-end prices. Point72 Asset Management is the largest at $30.4M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 2 cut.

FundQuarterSharesValueOf portfolioChange in shares
Point72 Asset Management2026-06-30492K$30.4M0.03%-363K
Millennium Management2026-06-30466K$28.7M0.01%+419K
Soros Fund Management2026-06-30117K$7.2M0.09%-322K
AQR Capital Management2026-06-3050K$3.1M0.00%+34K

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 FY 2026 (quarter ended 2026-06-30) RadNet reported revenue of $622.7M, up 25.0% from the same quarter a year earlier, and net income of $7.5M (0.10 diluted EPS). In FY 2025 it generated $298.8M of operating cash flow. As of 2026-06-30, cash was $726.3M against $1.33B of debt.

Cash
$726.3M
Debt
$1.33B
Equity
$1.10B
Total assets
$4.23B
Shares outstanding
78,697,257

Quarterly, last 8 quarters

QuarterPeriod endRevenueNet incomeMarginDiluted EPS
Q2 FY 20262026-06-30$622.7M$7.5M1.2%0.10
Q1 FY 20262026-03-31$575.6M-$33.5M-5.8%-0.43
Q4 FY 2025derived2025-12-31$547.7M-$597K-0.1%n/a
Q3 FY 20252025-09-30$522.9M$5.4M1.0%0.07
Q2 FY 20252025-06-30$498.2M$14.5M2.9%0.19
Q1 FY 20252025-03-31$471.4M-$37.9M-8.0%-0.51
Q4 FY 2024derived2024-12-31$477.1M$5.3M1.1%n/a
Q3 FY 20242024-09-30$461.1M$3.2M0.7%0.04

Fiscal years, with buybacks and dividends

Fiscal yearEndsRevenueNet incomeOperating cash flowCapexBuybacksDividends
FY 20252025-12-31$2.04B-$18.7M$298.8M$213.3Mn/an/a
FY 20242024-12-31$1.83B$2.8M$233.0M$188.1Mn/an/a
FY 20232023-12-31$1.62B$3.0M$220.9M$176.6Mn/an/a
FY 20222022-12-31$1.43B$10.7M$146.4M$119.5Mn/an/a
FY 20212021-12-31$1.32B$24.7M$149.5M$137.9Mn/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 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 2026-08-06 from the cover page.

What this page is

RadNet 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 RadNet (RDNT), SEC CIK 790526, listed on Nasdaq, classified by the SEC as services-medical laboratories. 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 2026-09-14.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 2026-06-18.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 2026-08-14.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
Earnings dates
SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-10.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 2026-06-18.JSON and CSV
Company record
EDGAR filing index for CIK 790526Ticker, 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.

Datasets

Frequently Asked Questions

How much of RDNT is sold short?
9,361,935 shares were held short at the 2026-09-30 settlement, 12.8 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 RDNT's daily short volume?
On 2026-10-09, 99,823 of the 260,439 RDNT shares reported to FINRA were sold short, 38.3% of the day's reported volume. Short volume is a flow for one day, not a position.
Does RDNT have fails to deliver?
The SEC's latest file shows 6,449 RDNT shares failed to deliver at settlement 2026-09-14. Fails are reported per settlement date and published twice a month with a lag.
Are RDNT insiders buying or selling?
No open-market insider trades were reported for RDNT in the last 90 days. The most recent filings are listed below. Latest filing: SWARTZ DAVID L (Director) on 2026-06-18.
Have RDNT insiders filed to sell?
12 Form 144 notices on file for RDNT worth $17.8M at the prices reported; 0 in the last 90 days worth $0. Latest: DAVID SWARTZ filed on 2026-06-18 to sell 2,699 shares ($145K) from 2026-06-18.
Who owns 5% or more of RDNT?
5 holders report 5% or more of RDNT in their latest filing, all on Schedule 13G (passive). The largest reported stake is BlackRock, Inc. at 12.0% of the class (9,250,663 shares), filed 2025-10-17 for an event on 2025-09-30.
What did RDNT report last quarter?
In Q2 FY 2026 (quarter ended 2026-06-30) RadNet reported revenue of $622.7M, up 25.0% from the same quarter a year earlier, and net income of $7.5M (0.10 diluted EPS). In FY 2025 it generated $298.8M of operating cash flow. As of 2026-06-30, cash was $726.3M against $1.33B of debt.
Which tracked 13F managers own RDNT?
4 of the 30 tracked 13F managers held RDNT shares at their latest filing, $69.3M in all. The largest: Steve Cohen's Point72 Asset Management (492K shares, $30.4M), Izzy Englander's Millennium Management (466K shares, $28.7M), George Soros's Soros Fund Management (117K shares, $7.2M), Cliff Asness's AQR Capital Management (50K shares, $3.1M).

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