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Summit Midstream (SMC)

Summit Midstream 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 natural gas transmission.

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172K

Short interest

settlement 2026-09-30

1.9

Days to cover

-2.1 days vs prior

36.8%

Short share of volume

2026-10-09

99

Fails to deliver

settlement 2026-08-27

Mon 9 Nov

Next earnings

estimated date

-$79K

Insider flow, 90 days

0 buys, 1 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 SMC is 171,556 shares, down 73,735 shares over the last month. Over the last 48 readings it ranged from 47,448 shares (28 February 2025) to 494,883 shares (30 June 2025). At the reported average volume of 89K shares a day that is 1.9 days to cover.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-09-30171,556-28.5%88,7601.93
2026-09-15240,055-2.1%60,1433.99
2026-08-31245,291-10.1%41,4925.91
2026-08-14272,923+2.1%69,3173.94
2026-07-31267,331+14.2%43,3916.16
2026-07-15234,151+40.0%44,9585.21
2026-06-30167,290+2.6%81,0582.06
2026-06-15163,077+15.7%66,1822.46
2026-05-29140,900+0.8%96,7961.46
2026-05-15139,779-14.0%53,2402.63
2026-04-30162,600-9.2%37,8774.29
2026-04-15179,149-2.1%46,6413.84
2026-03-31182,969-7.6%130,7941.40
2026-03-13197,986+4.6%71,4522.77
2026-02-27189,322-20.8%44,6604.24
2026-02-13239,024-4.4%42,3735.64
2026-01-30249,985-16.5%47,7015.24
2026-01-15299,318-10.0%50,4795.93
2025-12-31332,450-9.2%56,8465.85
2025-12-15365,939-0.4%50,7807.21
2025-11-28367,337-2.5%69,5995.28
2025-11-14376,925-0.0%78,9124.78
2025-10-31376,959+0.6%48,8217.72
2025-10-15374,675-14.7%73,6245.09

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 9 October 2026, the short share of SMC volume is 36.8%, up 4.5 points over the last five sessions. Over the last 30 readings it ranged from 12.4% (21 September 2026) to 60.1% (28 August 2026). The latest reading is in line with the 30-session average of 36.1%, on 28K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-10-0910K28K36.8%0
2026-10-0815K41K37.2%0
2026-10-0710K30K35.0%0
2026-10-0621K57K37.8%0
2026-10-0518K50K37.0%0
2026-10-027K21K32.3%0
2026-10-019K48K18.6%0
2026-09-307K28K23.2%0
2026-09-299K35K26.9%0
2026-09-288K24K33.1%0
2026-09-255K20K24.0%0
2026-09-246K21K28.1%0
2026-09-235K21K25.7%0
2026-09-2212K27K46.5%0
2026-09-212K16K12.4%0
2026-09-189K20K45.4%0
2026-09-179K24K37.2%0
2026-09-169K18K50.6%0
2026-09-1513K46K28.0%1,405
2026-09-1411K25K42.9%0
2026-09-1112K22K52.3%0
2026-09-109K23K37.9%0
2026-09-0914K29K46.6%0
2026-09-089K25K36.2%0
2026-09-045K14K35.6%0
2026-09-034K16K26.5%0
2026-09-027K23K32.4%0
2026-09-0112K20K59.2%0
2026-08-319K25K36.8%0
2026-08-285K8K60.1%0

Fails to deliver

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

As of 27 August 2026, the fails-to-deliver balance in SMC is 99 shares, up 59 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (10 October 2025) to 14,540 shares (22 September 2025). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-08-2799$34.02$3K
2026-08-1140$31.84$1K
2026-08-051,795$30.38$55K
2026-08-04603$31.19$19K
2026-07-2339$30.36$1K
2026-07-17157$31.02$5K
2026-07-141,135$30.22$34K
2026-07-10134$30.88$4K
2026-06-30740$28.31$21K
2026-06-16343$28.92$10K
2026-06-01231$26.65$6K
2026-05-0416$32.20$515
2026-03-1236$31.50$1K
2026-03-1192$31.35$3K
2026-01-09238$27.06$6K
2025-12-08105$26.35$3K
2025-11-24295$24.87$7K
2025-10-311$22.13$22
2025-10-2413$21.92$285
2025-10-203$20.03$60
2025-10-101$22.37$22
2025-10-06266$22.00$6K
2025-10-0164$20.54$1K
2025-09-2946$22.55$1K
2025-09-2214,540$22.04$320K
2025-09-19585$23.26$14K
2025-09-18302$22.84$7K
2025-09-10150$22.96$3K
2025-09-058$23.25$186
2025-08-2973$20.92$2K

Insider trades

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

Insiders at SMC reported 1 open-market sell worth $79K in the last 90 days and no open-market buys. Latest filing: Johnston James David (Executive VP, GC, CCO and Secy) on 2026-10-01.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-10-01Johnston James DavidExecutive VP, GC, CCO and SecySell3K$30.51$79K73K
2026-07-02Johnston James DavidExecutive VP, GC, CCO and SecySell3K$29.72$77K75K
2026-05-19PETERS JERRY LDirectorSell10K$32.00$320K17K
2026-04-20PETERS JERRY LDirectorGift4K$0.00$027K
2026-04-20PETERS JERRY LDirectorGift4K$0.00$00
2026-03-31Herring EdwardDirector,TenPercentOwnerBuy1.2M$31.08$37.9M1.4M
2026-03-31Connect Midstream, LLC10% ownerBuy1.2M$31.08$37.9M1.4M
2026-03-16Stone Carolyn JDirectorGrant4K$0.00$04K
2026-03-16PETERS JERRY LDirectorGrant4K$0.00$04K
2026-03-16Oates RommelDirectorGrant4K$0.00$026K
2026-03-16McNally Robert JosephDirectorGrant4K$0.00$037K
2026-03-16Jacobe James LeeDirectorGrant4K$0.00$046K
2026-03-16CLEARY JAMES JDirectorGrant4K$0.00$037K
2026-03-13Deneke J HeathChairman, President and CEOOption exercise16Kprice not stated in the filingnot stated342K
2026-03-13Deneke J HeathChairman, President and CEOTax withholding12K$30.29$358K354K
2026-03-13Deneke J HeathChairman, President and CEOOption exercise58Kprice not stated in the filingnot stated349K
2026-03-13Deneke J HeathChairman, President and CEOTax withholding6K$30.29$189K336K
2026-03-13Deneke J HeathChairman, President and CEOOption exercise30Kprice not stated in the filingnot stated366K
2026-03-13Deneke J HeathChairman, President and CEOTax withholding22K$30.29$674K327K
2026-03-13Johnston James DavidExecutive VP, GC, CCO and SecyTax withholding2K$30.29$55K72K
2026-03-13Johnston James DavidExecutive VP, GC, CCO and SecyOption exercise19Kprice not stated in the filingnot stated77K
2026-03-13Johnston James DavidExecutive VP, GC, CCO and SecyTax withholding4K$30.29$117K78K
2026-03-13Johnston James DavidExecutive VP, GC, CCO and SecyOption exercise10Kprice not stated in the filingnot stated82K
2026-03-13Johnston James DavidExecutive VP, GC, CCO and SecyOption exercise5Kprice not stated in the filingnot stated74K
2026-03-13Johnston James DavidExecutive VP, GC, CCO and SecyTax withholding7K$30.29$226K69K
2026-03-13Mault William J.Executive VP and CFOOption exercise17Kprice not stated in the filingnot stated87K
2026-03-13Mault William J.Executive VP and CFOTax withholding3K$30.29$102K89K
2026-03-13Mault William J.Executive VP and CFOTax withholding7K$30.29$197K81K
2026-03-13Mault William J.Executive VP and CFOOption exercise5Kprice not stated in the filingnot stated85K
2026-03-13Mault William J.Executive VP and CFOTax withholding2K$30.29$57K84K
2026-03-13Mault William J.Executive VP and CFOOption exercise9Kprice not stated in the filingnot stated92K
2026-03-13Sicinski Matthew B.Senior VP and CAOTax withholding773$30.29$23K40K
2026-03-13Sicinski Matthew B.Senior VP and CAOOption exercise3Kprice not stated in the filingnot stated40K
2026-03-13Sicinski Matthew B.Senior VP and CAOTax withholding368$30.29$11K37K
2026-03-13Sicinski Matthew B.Senior VP and CAOOption exercise2Kprice not stated in the filingnot stated37K
2026-03-13Sicinski Matthew B.Senior VP and CAOTax withholding2K$30.29$46K36K
2026-03-13Sicinski Matthew B.Senior VP and CAOOption exercise6Kprice not stated in the filingnot stated37K
2026-01-16Deneke J HeathChairman, President and CEOOption exercise33Kprice not stated in the filingnot stated299K
2026-01-16Deneke J HeathChairman, President and CEOTax withholding8K$26.81$220K291K
2026-01-16Johnston James DavidExecutive VP, GC, CCO and SecyOption exercise11Kprice not stated in the filingnot stated61K
2026-01-16Johnston James DavidExecutive VP, GC, CCO and SecyTax withholding3K$26.81$78K58K
2026-01-16Sicinski Matthew B.Senior VP and CAOOption exercise4Kprice not stated in the filingnot stated32K
2026-01-16Sicinski Matthew B.Senior VP and CAOTax withholding1K$26.81$29K31K
2026-01-16Mault William J.Executive VP and CFOTax withholding3K$26.81$74K71K
2026-01-16Mault William J.Executive VP and CFOOption exercise10Kprice not stated in the filingnot stated73K
2025-08-28Tailwater Capital LLCTenPercentOwnerBuy26K$20.89$550K146K
2025-08-28Connect Midstream, LLC10% ownerBuy26K$20.89$550K146K
2025-08-27Tailwater Capital LLCTenPercentOwnerBuy47K$20.50$972K120K
2025-08-27Connect Midstream, LLC10% ownerBuy47K$20.50$972K120K
2025-08-26Tailwater Capital LLCTenPercentOwnerBuy73K$20.46$1.5M73K

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

2 Form 144 notices on file for SMC worth $470K at the prices reported; 0 in the last 90 days worth $0. Latest: JAMES JOHNSTON filed on 2026-07-02 to sell 5,200 shares ($153K) from 2026-07-02.

FiledSellerSharesMarket valueOf outstandingSale fromBroker
2026-07-02JAMES JOHNSTONOfficer5K$153K0.038%2026-07-02Morgan Stanley Smith Barney LLC Executive Financial Services
2026-05-18PETERS JERRY LDirector10K$317K0.072%2026-05-18Charles Schwab Corporation

Large holders (13D and 13G)

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

5 holders report 5% or more of SMC in their latest filing, all on Schedule 13D (active intent). The largest reported stake is Connect Midstream, LLC at 39.1% of the class (7,891,864 shares), filed 2026-04-09 for an event on 2026-03-31.

FiledFormHolderSharesOf classEvent
2026-04-2713G/Ano. 1BlackRock, Inc.parent holding company613K4.9%2026-03-31
2026-04-0913D/Ano. 3Connect Midstream, LLCother entity7.9M39.1%2026-03-31
2026-04-0913D/Ano. 3Tailwater Energy Fund III LPpartnership7.9M39.1%2026-03-31
2026-04-0913D/Ano. 3Tailwater Capital LLCother entity7.9M39.1%2026-03-31
2026-04-0913D/Ano. 3Jason H. Downieindividual7.9M39.1%2026-03-31
2026-04-0913D/Ano. 3Edward Herringindividual7.9M39.1%2026-03-31
2026-03-2713G/Ano. 1The Vanguard Groupinvestment adviser00.0%2026-03-13
2026-01-0613G/Ano. 2He Zhengxun/an/a2025-12-31

13F holders

Tracked managers holding SMC at their latest 13F. JSON

4 of the 30 tracked managers held SMC at their latest 13F, $3.6M in total at quarter-end prices. Citadel Advisors is the largest at $1.8M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 3 added shares and 1 cut.

FundQuarterSharesValueOf portfolioChange in shares
Citadel Advisors2026-06-3064K$1.8M0.00%+55K
D. E. Shaw & Co.2026-06-3026K$742K0.00%+4K
Millennium Management2026-06-3018K$509K0.00%new
Point72 Asset Management2026-06-3018K$508K0.00%-597

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

Summit Midstream 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 Summit Midstream (SMC), SEC CIK 2024218, listed on NYSE, classified by the SEC as natural gas transmission. 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 2026-08-27.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 2026-07-02.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 2026-04-27.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 2026-08-10.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 2026-10-01.JSON and CSV
Company record
EDGAR filing index for CIK 2024218Ticker, 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 natural gas transmission

Other company pages

Datasets

Frequently Asked Questions

How much of SMC is sold short?
171,556 shares were held short at the 2026-09-30 settlement, 1.9 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 SMC's daily short volume?
On 2026-10-09, 10,312 of the 28,036 SMC shares reported to FINRA were sold short, 36.8% of the day's reported volume. Short volume is a flow for one day, not a position.
Does SMC have fails to deliver?
The SEC's latest file shows 99 SMC shares failed to deliver at settlement 2026-08-27. Fails are reported per settlement date and published twice a month with a lag.
Are SMC insiders buying or selling?
Insiders at SMC reported 1 open-market sell worth $79K in the last 90 days and no open-market buys. Latest filing: Johnston James David (Executive VP, GC, CCO and Secy) on 2026-10-01.
Have SMC insiders filed to sell?
2 Form 144 notices on file for SMC worth $470K at the prices reported; 0 in the last 90 days worth $0. Latest: JAMES JOHNSTON filed on 2026-07-02 to sell 5,200 shares ($153K) from 2026-07-02.
Who owns 5% or more of SMC?
5 holders report 5% or more of SMC in their latest filing, all on Schedule 13D (active intent). The largest reported stake is Connect Midstream, LLC at 39.1% of the class (7,891,864 shares), filed 2026-04-09 for an event on 2026-03-31.
Which tracked 13F managers own SMC?
4 of the 30 tracked 13F managers held SMC shares at their latest filing, $3.6M in all. The largest: Ken Griffin's Citadel Advisors (64K shares, $1.8M), D. E. Shaw & Co. (26K shares, $742K), Izzy Englander's Millennium Management (18K shares, $509K), Steve Cohen's Point72 Asset Management (18K shares, $508K).

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