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SEACOR Marine Holdings (SMHI)

SEACOR Marine Holdings on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, earnings dates and insider trades. Listed on NYSE, classified by the SEC as deep sea foreign transportation of freight.

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896K

Short interest

settlement 2026-09-30

9.0

Days to cover

-1.4 days vs prior

41.8%

Short share of volume

2026-10-13

3,483

Fails to deliver

settlement 2026-08-31

Wed 28 Oct

Next earnings

estimated date

-$1.8M

Insider flow, 90 days

0 buys, 18 sells

As of 2026-10-13.

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 SMHI is 896,316 shares, up 59,093 shares over the last month. Over the last 48 readings it ranged from 582,353 shares (15 October 2024) to 1,169,720 shares (28 February 2025). At the reported average volume of 100K shares a day that is 9.0 days to cover.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-09-30896,316+2.9%99,7878.98
2026-09-15871,174+4.1%83,74710.40
2026-08-31837,223-7.8%95,6758.75
2026-08-14907,856-10.3%101,9168.91
2026-07-311,012,605-11.7%149,9246.75
2026-07-151,146,867+18.1%117,0019.80
2026-06-30970,875+15.6%246,5653.94
2026-06-15839,849+1.5%71,38111.77
2026-05-29827,590+9.6%87,0489.51
2026-05-15754,927-8.7%79,5099.49
2026-04-30827,109-1.2%63,59613.01
2026-04-15837,437-11.0%82,80810.11
2026-03-31941,300-6.3%103,3039.11
2026-03-131,004,996+8.5%213,3454.71
2026-02-27926,425-4.4%152,1156.09
2026-02-13969,315+3.3%105,6169.18
2026-01-30938,401+20.1%158,3025.93
2026-01-15781,328+17.8%92,6538.43
2025-12-31663,203-3.8%146,5604.53
2025-12-15689,386-8.7%87,4777.88
2025-11-28755,444+1.8%108,0926.99
2025-11-14742,278-16.0%109,5676.77
2025-10-31883,407+2.3%65,91613.40
2025-10-15863,550+9.3%71,44612.09

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 13 October 2026, the short share of SMHI volume is 41.8%, down 5.9 points over the last five sessions. Over the last 30 readings it ranged from 28.2% (10 September 2026) to 74.5% (17 September 2026). The latest reading is 6.8 points below the 30-session average of 48.6%, on 23K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-10-139K23K41.8%0
2026-10-1232K50K64.3%401
2026-10-095K11K47.1%0
2026-10-0816K25K67.0%0
2026-10-079K19K49.7%0
2026-10-0614K29K47.7%0
2026-10-0515K24K61.1%0
2026-10-0213K23K58.6%0
2026-10-0115K50K29.9%0
2026-09-3011K19K59.8%470
2026-09-299K16K58.0%1,000
2026-09-2816K41K37.6%200
2026-09-2520K51K39.4%2,124
2026-09-249K22K43.1%0
2026-09-2326K47K55.5%0
2026-09-2211K37K31.5%0
2026-09-2110K21K45.6%317
2026-09-1815K37K40.8%2
2026-09-177K10K74.5%0
2026-09-1619K36K53.0%0
2026-09-157K17K40.4%0
2026-09-1416K26K60.2%0
2026-09-117K18K38.7%4
2026-09-1014K50K28.2%3,100
2026-09-097K14K52.6%0
2026-09-0816K29K53.3%0
2026-09-0415K40K36.5%600
2026-09-038K22K37.7%2
2026-09-0212K22K52.5%0
2026-09-0126K50K52.4%100

Fails to deliver

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

As of 31 August 2026, the fails-to-deliver balance in SMHI is 3,483 shares, up 2,869 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (5 June 2026) to 19,000 shares (23 June 2026).

SettlementShares failedPriceValue
2026-08-313,483$9.41$33K
2026-08-20614$9.78$6K
2026-08-182,045$9.82$20K
2026-08-17405$9.86$4K
2026-08-1317$9.73$165
2026-08-10770$9.52$7K
2026-08-04195$9.48$2K
2026-08-035$9.43$47
2026-07-31131$9.54$1K
2026-07-293,624$7.97$29K
2026-07-2721$8.00$168
2026-07-24799$7.68$6K
2026-07-231,743$7.80$14K
2026-07-20379$7.91$3K
2026-07-152,535$8.30$21K
2026-07-137,608$7.80$59K
2026-07-072,414$7.37$18K
2026-07-023,405$7.69$26K
2026-07-01736$7.65$6K
2026-06-3011,829$8.02$95K
2026-06-2566$7.23$477
2026-06-24655$7.86$5K
2026-06-2319,000$7.93$151K
2026-06-222,976$6.68$20K
2026-06-182,188$6.97$15K
2026-06-171,031$7.11$7K
2026-06-162,030$7.21$15K
2026-06-12356$7.33$3K
2026-06-0849$7.35$360
2026-06-051$7.51$8

Insider trades

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

Insiders at SMHI reported 18 open-market sells worth $1.8M in the last 90 days and no open-market buys. Latest filing: Llorca Jesus (EVP & CFO) on 2026-09-02.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-09-02Llorca JesusEVP & CFOSell4K$10.00$40K383K
2026-09-02Llorca JesusEVP & CFOOption exercise2K$4.39$9K387K
2026-09-02Everett Andrew H IISr. VP, General Counsel & SecySell4K$10.00$41K194K
2026-08-21Llorca JesusEVP & CFOSell401$10.00$4K385K
2026-08-21Llorca JesusEVP & CFOOption exercise200$4.39$878385K
2026-08-21Everett Andrew H IISr. VP, General Counsel & SecySell200$10.00$2K198K
2026-08-17Llorca JesusEVP & CFOSell3K$9.85$32K385K
2026-08-14Llorca JesusEVP & CFOSell6K$9.78$58K388K
2026-08-13Llorca JesusEVP & CFOSell2K$9.75$15K394K
2026-08-12Llorca JesusEVP & CFOSell3K$9.76$28K396K
2026-08-11Llorca JesusEVP & CFOSell13K$9.79$128K399K
2026-08-07Llorca JesusEVP & CFOSell205$9.75$2K412K
2026-08-04Everett Andrew H IISr. VP, General Counsel & SecySell1K$9.56$10K199K
2026-08-03Everett Andrew H IISr. VP, General Counsel & SecySell5K$9.52$49K200K
2026-07-31Everett Andrew H IISr. VP, General Counsel & SecySell2K$9.54$16K205K
2026-07-30Rossmiller Gregory ScottSVP & CAOSell15K$9.52$143K245K
2026-07-30Rossmiller Gregory ScottSVP & CAOSell13K$8.74$111K260K
2026-07-30Llorca JesusEVP & CFOSell61K$9.12$555K412K
2026-07-30Everett Andrew H IISr. VP, General Counsel & SecySell17K$9.51$164K206K
2026-07-30Everett Andrew H IISr. VP, General Counsel & SecySell46K$9.00$413K224K
2026-07-15Llorca JesusEVP & CFOSell14K$8.42$117K473K
2026-07-15Rossmiller Gregory ScottSVP & CAOSell3K$8.50$27K272K
2026-07-15Everett Andrew H IISr. VP, General Counsel & SecySell4K$8.50$35K269K
2026-07-14Llorca JesusEVP & CFOSell8K$8.29$65K487K
2026-07-01Llorca JesusEVP & CFOSell1K$8.01$11K494K
2026-06-30Llorca JesusEVP & CFOSell2K$8.02$13K496K
2026-06-29Llorca JesusEVP & CFOSell14K$8.03$116K497K
2026-06-29Everett Andrew H IISr. VP, General Counsel & SecySell11K$8.04$85K274K
2026-06-23Llorca JesusEVP & CFOSell12K$7.98$95K512K
2026-06-23Everett Andrew H IISr. VP, General Counsel & SecySell9K$8.02$76K284K
2026-06-22Llorca JesusEVP & CFOSell14K$7.73$112K524K
2026-06-16Rossmiller Gregory ScottSVP & CAOSell10K$7.17$69K275K
2026-06-15Rossmiller Gregory ScottSVP & CAOSell10K$7.27$70K285K
2026-06-02Young Lisa PDirectorGrant17K$0.00$048K
2026-06-02Regan Robert ChristopherDirectorGrant17K$0.00$096K
2026-06-02Persily JulieDirectorGrant15K$0.00$0101K
2026-06-02Miguel Bejos AlfredoDirectorGrant12K$0.00$0144K
2026-06-02Miguel Bejos AlfredoDirectorTax withholding6K$7.56$42K132K
2026-06-02MORSE ANDREW RDirectorGrant21K$0.00$0194K
2026-03-07Gellert John MPresident and CEOOption exercise10Kprice not stated in the filingnot stated1.1M
2026-03-07Gellert John MPresident and CEOTax withholding4K$7.31$31K1.1M
2026-03-07Llorca JesusEVP & CFOOption exercise8Kprice not stated in the filingnot stated542K
2026-03-07Llorca JesusEVP & CFOTax withholding4K$7.31$29K538K
2026-03-07Rossmiller Gregory ScottSVP & CAOOption exercise4Kprice not stated in the filingnot stated296K
2026-03-07Rossmiller Gregory ScottSVP & CAOTax withholding1K$7.31$11K295K
2026-03-07Everett Andrew H IISr. VP, General Counsel & SecyOption exercise4Kprice not stated in the filingnot stated296K
2026-03-07Everett Andrew H IISr. VP, General Counsel & SecyTax withholding2K$7.31$15K294K
2026-03-04Rossmiller Gregory ScottSVP & CAOTax withholding25K$7.63$190K292K
2026-03-04Llorca JesusEVP & CFOTax withholding67K$7.63$511K534K
2026-03-04Gellert John MPresident and CEOTax withholding66K$7.63$503K1.0M

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

1 Form 144 notice on file for SMHI worth $52K at the prices reported; 0 in the last 90 days worth $0. Latest: Julie Persily filed on 2025-11-12 to sell 7,000 shares ($52K) from 2025-11-11.

FiledSellerSharesMarket valueOf outstandingSale fromBroker
2025-11-12Julie PersilyDirector7K$52K0.026%2025-11-11Merrill Lynch

Large holders (13D and 13G)

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

2 holders report 5% or more of SMHI in their latest filing, 1 on Schedule 13D (active intent). The largest reported stake is Chernett Jorey at 7.2% of the class (1,946,963 shares), filed 2026-06-22 for an event on 2026-06-22.

FiledFormHolderSharesOf classEvent
2026-08-1113GCarl K. Oppenheimerindividual1.4M5.1%2026-06-30
2026-08-1113GOppenheimer + Close, LLCinvestment adviser706K2.6%2026-06-30
2026-08-1113GOppvest, LLCother entity, investment adviser678K2.5%2026-06-30
2026-08-1113GP. Oppenheimer Investment Parternship, LPpartnership530K1.9%2026-06-30
2026-08-1113GOppenheimer-Close Investment Partnership, LPpartnership148K0.6%2026-06-30
2026-06-2213DChernett Joreyindividual1.9M7.2%2026-06-22
2026-01-2113G/Ano. 1Dimensional Fund Advisors LPinvestment adviser1.3M4.8%2025-12-31
2025-10-3013G/Ano. 1The Vanguard Groupinvestment adviser1.2M4.6%2025-09-30

13F holders

Tracked managers holding SMHI at their latest 13F. JSON

4 of the 30 tracked managers held SMHI at their latest 13F, $2.4M in total at quarter-end prices. Renaissance Technologies is the largest at $874K (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 2 cut.

FundQuarterSharesValueOf portfolioChange in shares
Renaissance Technologies2026-06-30114K$874K0.00%-6K
Citadel Advisors2026-06-3072K$551K0.00%-47K
D. E. Shaw & Co.2026-06-3066K$502K0.00%+6K
AQR Capital Management2026-06-3056K$425K0.00%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.

What this page is

SEACOR Marine Holdings 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 SEACOR Marine Holdings (SMHI), SEC CIK 1690334, listed on NYSE, classified by the SEC as deep sea foreign transportation of freight. 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 2026-10-13.JSON and CSV
Fails to deliver
SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-08-31.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 2025-11-12.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 2026-08-11.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
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 2026-07-29.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 2026-09-02.JSON and CSV
Company record
EDGAR filing index for CIK 1690334Ticker, name and exchange from the SEC's company list, refreshed weekly.
Rate limits
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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 deep sea foreign transportation of freight

Other company pages

Datasets

Frequently Asked Questions

How much of SMHI is sold short?
896,316 shares were held short at the 2026-09-30 settlement, 9.0 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 SMHI's daily short volume?
On 2026-10-13, 9,499 of the 22,738 SMHI shares reported to FINRA were sold short, 41.8% of the day's reported volume. Short volume is a flow for one day, not a position.
Does SMHI have fails to deliver?
The SEC's latest file shows 3,483 SMHI shares failed to deliver at settlement 2026-08-31. Fails are reported per settlement date and published twice a month with a lag.
Are SMHI insiders buying or selling?
Insiders at SMHI reported 18 open-market sells worth $1.8M in the last 90 days and no open-market buys. Latest filing: Llorca Jesus (EVP & CFO) on 2026-09-02.
Have SMHI insiders filed to sell?
1 Form 144 notice on file for SMHI worth $52K at the prices reported; 0 in the last 90 days worth $0. Latest: Julie Persily filed on 2025-11-12 to sell 7,000 shares ($52K) from 2025-11-11.
Who owns 5% or more of SMHI?
2 holders report 5% or more of SMHI in their latest filing, 1 on Schedule 13D (active intent). The largest reported stake is Chernett Jorey at 7.2% of the class (1,946,963 shares), filed 2026-06-22 for an event on 2026-06-22.
Which tracked 13F managers own SMHI?
4 of the 30 tracked 13F managers held SMHI shares at their latest filing, $2.4M in all. The largest: Renaissance Technologies (114K shares, $874K), Ken Griffin's Citadel Advisors (72K shares, $551K), D. E. Shaw & Co. (66K shares, $502K), Cliff Asness's AQR Capital Management (56K shares, $425K).

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