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Medline Inc.

MDLN
Exchange
Nasdaq
Industry
Surgical & Medical Instruments & Apparatus
SEC CIK
0002046386

In the last 90 days, Medline Inc. insiders filed 0 open-market purchases and 3 sales; 412 institutions reported holding it in 13F filings for Q2 2026, worth $33.7B in total; 3 superinvestors hold it, including Lone Pine Capital and Viking Global Investors.

Four kinds of short-selling data, each measuring something different:

  • Short interest: shares sold short and not yet bought back, as of a settlement date. FINRA publishes it twice a month, about eight business days after the settlement date.
  • Daily short volume: shares sold short each day in off-exchange trades reported to FINRA. It counts trades, not open positions, and is published the next day.
  • Fails-to-deliver: shares not delivered by the settlement date. The SEC publishes them twice a month, about two weeks late.
  • ATS (dark pool) volume: weekly volume on alternative trading systems and other off-exchange venues. FINRA publishes it two to four weeks after the week.

More in the glossary.

Short interest

Shares sold short and not yet bought back, from FINRA, on every settlement date in the last two years.

Short interest
37.8M
Shares, settlement Oct 30, 2026
Change
−2.98M
−7.3% vs. Oct 15, 2026
Days to cover
3.79
Short interest ÷ average daily volume
Average daily volume
9.98M
Shares, as reported by FINRA
Short interest by settlement date
Dec 31, 2025: 12,886,264 sharesJan 15, 2026: 5,963,211 sharesJan 30, 2026: 6,829,051 sharesFeb 13, 2026: 7,269,731 sharesFeb 27, 2026: 8,183,937 sharesMar 13, 2026: 11,573,432 sharesMar 31, 2026: 21,940,426 sharesApr 15, 2026: 18,669,535 sharesApr 30, 2026: 18,378,050 sharesMay 15, 2026: 22,266,081 sharesMay 29, 2026: 22,771,237 sharesJun 15, 2026: 27,643,427 sharesJun 30, 2026: 36,298,239 sharesJul 15, 2026: 29,452,298 sharesJul 31, 2026: 34,562,171 sharesAug 14, 2026: 36,169,194 sharesAug 31, 2026: 39,481,289 sharesSep 15, 2026: 41,309,561 sharesSep 30, 2026: 52,686,646 sharesOct 15, 2026: 40,816,957 sharesOct 30, 2026: 37,840,814 shares
Short interest in MDLN by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 202637.8M−2.98M−7.3%9.98M3.79
Oct 15, 202640.8M−11.9M−22.5%7.58M5.38
Sep 30, 202652.7M+11.4M+27.5%10.4M5.08
Sep 15, 202641.3M+1.83M+4.6%6.42M6.43
Aug 31, 202639.5M+3.31M+9.2%6.50M6.07
Aug 14, 202636.2M+1.61M+4.7%9.45M3.83
Jul 31, 202634.6M+5.11M+17.4%5.05M6.84
Jul 15, 202629.5M−6.85M−18.9%6.57M4.48
Jun 30, 202636.3M+8.65M+31.3%9.72M3.73
Jun 15, 202627.6M+4.87M+21.4%11.8M2.33
May 29, 202622.8M+505.2K+2.3%16.8M1.35
May 15, 202622.3M+3.89M+21.2%7.84M2.84
Apr 30, 202618.4M−291.5K−1.6%4.94M3.72
Apr 15, 202618.7M−3.27M−14.9%5.99M3.12
Mar 31, 202621.9M+10.4M+89.6%7.71M2.85
Mar 13, 202611.6M+3.39M+41.4%9.76M1.19
Feb 27, 20268.18M+914.2K+12.6%2.57M3.18
Feb 13, 20267.27M+440.7K+6.5%2.68M2.71
Jan 30, 20266.83M+865.8K+14.5%2.96M2.31
Jan 15, 20265.96M−6.92M−53.7%4.70M1.27
Dec 31, 202512.9M+12.9M+100.0%16.6M1.00

Fails-to-deliver

Shares that weren't delivered by the settlement date, from the SEC, for the last 30 dates with fails. The price is the previous day's closing price published by the SEC.

Fails-to-deliver in MDLN by settlement date
Settlement dateSharesPriceValue
Oct 14, 2026593$35.70$21.2K
Oct 9, 2026860$35.74$30.7K
Oct 7, 20261,829,628$35.55$65.0M
Oct 2, 202629,589$34.94$1.03M
Oct 1, 202669,500$34.70$2.41M
Sep 30, 202616,700$34.98$584.2K
Sep 29, 20262,826$35.07$99.1K
Sep 25, 202684,264$34.66$2.92M
Sep 24, 20265,433$34.30$186.4K
Sep 23, 2026601,281$34.43$20.7M
Sep 22, 2026112,466$31.96$3.59M
Sep 21, 2026293,637$31.64$9.29M
Sep 18, 2026255,204$32.12$8.20M
Sep 17, 2026254,600$32.99$8.40M
Sep 11, 202698,285$32.39$3.18M
Sep 4, 202634$36.59$1.24K
Sep 2, 202627$35.11$947.97
Aug 31, 20267,690$35.28$271.3K
Aug 27, 20267,500$34.58$259.4K
Aug 26, 20262$35.64$71.28
Aug 25, 202673$34.70$2.53K
Aug 24, 20267,867$34.26$269.5K
Aug 14, 20261,518,584$35.58$54.0M
Aug 13, 2026773$35.50$27.4K
Aug 6, 2026133,877$36.67$4.91M
Aug 5, 20261,515$42.04$63.7K
Aug 3, 2026209,098$39.28$8.21M
Jul 31, 20264$39.12$156.48
Jul 30, 20262,301$40.08$92.2K
Jul 29, 202610$40.51$405.1

Daily short volume

Off-exchange short-sale volume, not short interest: shares sold short each day in trades reported to FINRA, for the last 30 trading days.

The short volume ratio isn't a sentiment gauge: market makers sell short to fill buy orders and to hedge, so short sales are usually about half of off-exchange volume.

Off-exchange short volume in MDLN by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 11, 20261,482,64815,3362,716,06854.6%
Nov 10, 20261,573,2923872,636,94759.7%
Nov 9, 20261,823,0051003,083,54359.1%
Nov 6, 20261,463,8159012,770,95052.8%
Nov 5, 20262,337,4619,2504,697,33949.8%
Nov 4, 20264,530,57144,2149,481,27047.8%
Nov 3, 20262,640,6734,1755,624,24947.0%
Nov 2, 20261,240,1801,3292,550,78348.6%
Oct 30, 20261,243,33306,499,68119.1%
Oct 29, 20261,617,3281,3665,594,01028.9%
Oct 28, 2026869,0341,5352,903,59429.9%
Oct 27, 20261,984,4459493,678,96453.9%
Oct 26, 2026817,1211402,302,59735.5%
Oct 23, 2026947,0375,5472,268,86441.7%
Oct 22, 20262,254,0009,2645,339,57842.2%
Oct 21, 20261,250,1091522,712,02146.1%
Oct 20, 20261,797,04223,9993,721,34248.3%
Oct 19, 20261,391,4692932,817,43949.4%
Oct 16, 20262,601,8012253,130,93083.1%
Oct 15, 20261,804,4227622,928,47461.6%
Oct 14, 20261,007,337138,1041,716,92158.7%
Oct 13, 20261,009,10810,4411,577,51764.0%
Oct 12, 20261,008,167111,430,70470.5%
Oct 9, 20261,144,4942372,214,30751.7%
Oct 8, 20262,340,214234,768,57149.1%
Oct 7, 2026906,0598951,834,86549.4%
Oct 6, 20262,485,361147,4284,202,37159.1%
Oct 5, 20261,763,4951273,330,73652.9%
Oct 2, 20262,087,4071,4904,784,15143.6%
Oct 1, 20263,330,9151304,388,43475.9%

ATS (dark pool) volume

Weekly volume on alternative trading systems (ATS) and other off-exchange (OTC) venues, from FINRA, for the last 12 weeks. ATS share is ATS volume ÷ (ATS + OTC volume), not a share of all trading.

Weekly ATS and OTC volume in MDLN
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 19, 2026T112,487,896119,4766,913,80324,42764.4%
Oct 12, 2026T18,131,98498,0093,258,34118,04071.4%
Oct 5, 2026T113,460,805113,6734,012,31621,01877.0%
Sep 28, 2026T112,078,987147,86111,595,71124,61051.0%
Sep 21, 2026T111,690,844130,7724,995,46423,13870.1%
Sep 14, 2026T112,073,312125,8789,749,59327,26555.3%
Sep 7, 2026T18,003,78397,9503,358,77724,04870.4%
Aug 31, 2026T19,489,486100,3847,144,89424,52157.0%
Aug 24, 2026T110,679,09984,2248,142,82021,05556.7%
Aug 17, 2026T19,893,432100,8594,486,14120,69768.8%
Aug 10, 2026T111,759,604104,5386,270,62122,22865.2%
Aug 3, 2026T117,005,733156,57514,603,99735,23653.8%