XOOMAR

Marathon Petroleum Corp (MPC)

Every FINRA and SEC series the site collects for Marathon Petroleum Corp: short interest with days to cover, daily short sale volume, fails to deliver and Form 4 insider trades. Listed on NYSE, classified by the SEC as petroleum refining.

Download CSV

6.5M

Short interest

settlement 2026-08-14

2.5

Days to cover

-3.9% vs prior

60.9%

Short share of volume

2026-09-11

42,326

Fails to deliver

settlement 2026-08-04

-$8.0M

Insider flow, 90 days

0 buys, 7 sells

As of 2026-09-11.

Short interest

FINRA, twice a month; the last 12 months shown, all 48 settlements in the JSON

As of 14 August 2026, short interest in MPC is 6,521,760 shares, up 109,505 shares over the last month. Over the last 48 readings it ranged from 5,585,954 shares (30 April 2026) to 11,355,093 shares (30 June 2025). At the reported average volume of 2.6M shares a day that is 2.5 days to cover.

Embed this chartfree, with the attribution line it carries
<iframe src="https://xoomar.com/embed/stocks/mpc" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
PreviewDark previewAdd ?theme=dark to the src for a dark chart.
SettlementShares shortChangeAvg daily volumeDays to cover
2026-08-146,521,760-3.9%2,630,8972.48
2026-07-316,786,536+5.8%2,006,2123.38
2026-07-156,412,255-12.1%2,013,5783.18
2026-06-307,290,864-5.0%2,816,4332.59
2026-06-157,673,768+21.6%2,343,9923.27
2026-05-296,312,262+6.1%2,294,7502.75
2026-05-155,947,128+6.5%2,525,3992.35
2026-04-305,585,954-12.0%2,146,9642.60
2026-04-156,348,348-6.7%2,168,4732.93
2026-03-316,803,010-15.4%3,094,8522.20
2026-03-138,038,630+1.2%3,249,8342.47
2026-02-277,946,172-9.6%2,259,1343.52
2026-02-138,793,250-1.5%2,561,5343.43
2026-01-308,928,450-0.6%1,951,1034.58
2026-01-158,983,903-2.4%2,602,3863.45
2025-12-319,200,800-5.8%2,407,3723.82
2025-12-159,768,852+5.5%2,168,2884.51
2025-11-289,263,628+28.5%1,878,5734.93
2025-11-147,210,689-4.5%2,546,9342.83
2025-10-317,547,623+2.4%1,576,4604.79
2025-10-157,374,144-1.3%1,544,4864.77
2025-09-307,470,350-5.0%2,167,2383.45
2025-09-157,861,133-3.1%1,783,3674.41
2025-08-298,111,300+3.7%1,826,6664.44

Daily short volume

FINRA Reg SHO, last 60 sessions. JSON

As of 11 September 2026, the short share of MPC volume is 60.9%, down 2.1 points over the last five sessions. Over the last 52 readings it ranged from 36.4% (23 July 2026) to 75.3% (8 September 2026). The latest reading is in line with the 30-session average of 59.1%, on 1.1M shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-09-11641K1.1M60.9%1,598
2026-09-10511K825K62.0%57
2026-09-09494K758K65.2%15
2026-09-08571K758K75.3%10
2026-09-04376K604K62.3%363
2026-09-03503K797K63.0%111
2026-09-02626K904K69.3%12
2026-09-01692K1.0M68.3%2
2026-08-31601K807K74.5%19
2026-08-28397K873K45.5%1,339
2026-08-27510K760K67.1%1,107
2026-08-26414K661K62.7%431
2026-08-25323K610K52.9%7,065
2026-08-24446K687K64.8%1,306
2026-08-21390K705K55.3%1,582
2026-08-20589K1.1M52.5%2,316
2026-08-19379K764K49.6%26
2026-08-18389K707K55.1%249
2026-08-17443K956K46.3%1,215
2026-08-14380K747K50.9%1,011
2026-08-13550K887K62.0%1,384
2026-08-12520K890K58.4%88
2026-08-11594K997K59.6%160
2026-08-10477K797K59.9%2
2026-08-07298K636K46.9%19
2026-08-06442K705K62.7%409
2026-08-05574K1.1M53.7%743
2026-08-04635K1.2M54.2%855
2026-08-03542K891K60.8%1,744
2026-07-31307K581K52.9%1,457

Fails to deliver

SEC, by settlement date. JSON

As of 4 August 2026, the fails-to-deliver balance in MPC is 42,326 shares, up 42,248 shares over the last settlement date. Over the last 49 readings it ranged from 1 share (31 December 2025) to 23,865,672 shares (29 June 2026). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-08-0442,326$307.03$13.0M
2026-08-0378$316.47$25K
2026-07-1050$283.30$14K
2026-07-064$266.35$1K
2026-07-012,160$255.67$552K
2026-06-2923,865,672$254.06$6.06B
2026-06-224,060$242.91$986K
2026-06-16107$250.86$27K
2026-06-1538$263.58$10K
2026-06-124,492$260.81$1.2M
2026-06-0856,599$262.01$14.8M
2026-04-2755$224.14$12K
2026-04-179$226.24$2K
2026-04-144,542$225.29$1.0M
2026-04-09185$231.98$43K
2026-04-0675$241.73$18K
2026-03-3167$245.16$16K
2026-03-26229$241.25$55K
2026-03-257,940$243.91$1.9M
2026-03-2325,158$232.53$5.8M
2026-03-1912$236.24$3K
2026-03-1354,901$230.07$12.6M
2026-03-122,370$226.74$537K
2026-03-031,027$209.82$215K
2026-02-1841$200.54$8K
2026-02-1014$204.26$3K
2026-01-2114,224$174.88$2.5M
2026-01-20604$175.63$106K
2026-01-15204$181.09$37K
2026-01-05232$165.14$38K

Insider trades

SEC Form 4, newest first, 50 of 72 shown. JSON

Insiders at MPC reported 7 open-market sells worth $8.0M 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: Lyon Shawn M (SVP Log &amp; Storage, MPLX GP LLC) on 2026-08-31.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-08-31Lyon Shawn MSVP Log &amp; Storage, MPLX GP LLCSell1K$375.75$376K11K
2026-08-28Lyon Shawn MSVP Log &amp; Storage, MPLX GP LLCSell425$368.51$157K12K
2026-08-27Brzezinski Erin MVP and ControllerSell570$362.79$207K2K
2026-08-17Benson Molly RChief Legal Ofc &amp; Corp SecSell5K$358.57$1.8M30K
2026-08-17Benson Molly RChief Legal Ofc &amp; Corp SecOption exercise5K$47.73$239K35K
2026-08-17Benson Molly RChief Legal Ofc &amp; Corp SecSell7K$358.57$2.6M30K
2026-08-17Benson Molly RChief Legal Ofc &amp; Corp SecOption exercise7K$47.73$343K38K
2026-08-13Lyon Shawn MSVP Log &amp; Storage, MPLX GP LLCSell3K$350.00$875K13K
2026-08-12Henschen Michael A IIEx VP, RefiningSell6K$341.56$2.1M11K
2026-08-03Mannen Maryann T.Chairman, President &amp; CEOTax withholding908$311.78$283K111K
2026-06-04Henschen Michael A IIEx VP, RefiningSell5K$268.85$1.3M17K
2026-06-04Henschen Michael A IIEx VP, RefiningOption exercise5K$49.94$248K22K
2026-06-04Henschen Michael A IIEx VP, RefiningSell1K$268.75$369K17K
2026-05-13Hessling Ricky D.Chief Commercial OfficerSell1K$250.00$250K7K
2026-04-30SURMA JOHN Pn/aGrant728$0.00$061K
2026-04-30STICE J MICHAELn/aGrant728$0.00$025K
2026-04-30SEMPLE FRANK Mn/aGrant728$0.00$015K
2026-04-30Rucker Kim K.W.n/aGrant728$0.00$020K
2026-04-30Paterson Eileen P.n/aGrant728$0.00$03K
2026-04-30Ellison-Taylor Kimberly Nn/aGrant728$0.00$03K
2026-04-30COHEN JONATHAN Zn/aGrant728$0.00$016K
2026-04-30CAMPBELL JEFFREY Cn/aGrant728$0.00$03K
2026-04-30Bayh Evann/aGrant728$0.00$073K
2026-04-30Al Khayyal Abdulaziz Fahdn/aGrant728$0.00$026K
2026-03-13Hessling Ricky D.Chief Commercial OfficerSell2K$228.18$371K8K
2026-03-12Hessling Ricky D.Chief Commercial OfficerSell559$230.00$129K9K
2026-03-12Hessling Ricky D.Chief Commercial OfficerSell478$228.00$109K10K
2026-03-11Lyon Shawn MSVP Log &amp; Storage, MPLX GP LLCGift1K$0.00$015K
2026-03-11Hessling Ricky D.Chief Commercial OfficerSell325$226.00$73K10K
2026-03-11Hessling Ricky D.Chief Commercial OfficerSell1K$224.51$333K11K
2026-03-02Mannen Maryann T.Chairman, President &amp; CEOTax withholding2K$206.30$461K112K
2026-03-02Mannen Maryann T.Chairman, President &amp; CEOTax withholding778$206.30$161K114K
2026-03-02Mannen Maryann T.Chairman, President &amp; CEOTax withholding952$206.30$196K115K
2026-03-02Lyon Shawn MSVP Log &amp; Storage, MPLX GP LLCTax withholding279$206.30$58K16K
2026-03-02Lyon Shawn MSVP Log &amp; Storage, MPLX GP LLCTax withholding237$206.30$49K17K
2026-03-02Lyon Shawn MSVP Log &amp; Storage, MPLX GP LLCTax withholding257$206.30$53K17K
2026-03-02Hessling Ricky D.Chief Commercial OfficerGift2K$0.00$012K
2026-03-02Hessling Ricky D.Chief Commercial OfficerTax withholding312$206.30$64K14K
2026-03-02Hessling Ricky D.Chief Commercial OfficerTax withholding282$206.30$58K14K
2026-03-02Hessling Ricky D.Chief Commercial OfficerTax withholding192$206.30$40K15K
2026-03-02Henschen Michael A IIEx VP, RefiningTax withholding191$206.30$39K18K
2026-03-02Henschen Michael A IIEx VP, RefiningTax withholding123$206.30$25K18K
2026-03-02Henschen Michael A IIEx VP, RefiningTax withholding167$206.30$34K19K
2026-03-02Floerke Gregory ScottEx VP &amp; COO, MPLX GP LLCTax withholding251$206.30$52K31K
2026-03-02Floerke Gregory ScottEx VP &amp; COO, MPLX GP LLCTax withholding278$206.30$57K32K
2026-03-02Brzezinski Erin MVP and ControllerTax withholding59$206.30$12K2K
2026-03-02Brzezinski Erin MVP and ControllerTax withholding42$206.30$9K2K
2026-03-02Brzezinski Erin MVP and ControllerTax withholding49$206.30$10K2K
2026-03-02Benson Molly RChief Legal Ofc &amp; Corp SecTax withholding348$206.30$72K30K
2026-03-02Benson Molly RChief Legal Ofc &amp; Corp SecTax withholding284$206.30$59K31K

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. JSON

7 Form 144 notices on file for MPC worth $10.2M at the prices reported; 7 in the last 90 days worth $10.2M. Latest: Lyon Shawn M filed on 2026-08-31 to sell 1,000 shares ($376K) from 2026-08-31.

FiledSellerSharesMarket valueOf outstandingSale fromBroker
2026-08-31Lyon Shawn MOfficer1K$376K0.000%2026-08-31Wells Fargo Clearing Services
2026-08-28Lyon Shawn MOfficer425$157K0.000%2026-08-28Wells Fargo Clearing Services
2026-08-27Brzezinski Erin MOfficer570$207K0.000%2026-08-27Fidelity Brokerage Services LLC
2026-08-24HAGEDORN CARL KRISTOPHEROfficer897$324K0.000%2026-08-24Fidelity Brokerage Services LLC
2026-08-20Lyon Shawn MOfficer3K$875K0.001%2026-08-13Wells Fargo Clearing Services
2026-08-17Benson Molly ROfficer17K$6.2M0.006%2026-08-17Fidelity Brokerage Services LLC
2026-08-12Henschen Michael A IIOfficer6K$2.1M0.002%2026-08-12Fidelity Brokerage Services LLC

13F holders

Tracked managers holding MPC at their latest 13F. JSON

8 of the 30 tracked managers held MPC at their latest 13F, $1.12B in total at quarter-end prices. Two Sigma Investments is the largest at $335.2M (0.2% of its portfolio) as of 2026-06-30. Over the prior quarter 5 added shares and 3 cut.

FundQuarterSharesValueOf portfolioChange in shares
Two Sigma Investments2026-06-301.3M$335.2M0.24%-246K
Citadel Advisors2026-06-301.1M$292.6M0.03%+170K
AQR Capital Management2026-06-30828K$211.8M0.07%+396K
Millennium Management2026-06-30516K$132.0M0.05%-13K
Bridgewater Associates2026-06-30349K$89.3M0.37%+272K
Point72 Asset Management2026-06-30156K$39.9M0.04%+108K
D. E. Shaw & Co.2026-06-3072K$18.3M0.01%+39K
Fisher Asset Management2026-06-3017K$4.4M0.00%-1K

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 2026 (quarter ended 2026-06-30) Marathon Petroleum Corp reported revenue of $51.99B, up 53.8% from the same quarter a year earlier, and net income of $5.14B (17.73 diluted EPS). In FY 2025 it generated $8.25B of operating cash flow and spent $3.49B on buybacks and $1.14B on dividends. As of 2026-06-30, cash was $7.77B against $2.12B of debt.

Cash
$7.77B
Debt
$2.12B
Equity
$19.08B
Total assets
$94.31B
Shares outstanding
280,824,763

Quarterly, last 8 quarters

QuarterPeriod endRevenueNet incomeMarginDiluted EPS
Q2 20262026-06-30$51.99B$5.14B9.9%17.73
Q1 20262026-03-31$34.20B$511.0M1.5%1.73
Q4 2025derived2025-12-31$32.57B$1.53B4.7%n/a
Q3 20252025-09-30$34.81B$1.37B3.9%4.51
Q2 20252025-06-30$33.80B$1.22B3.6%3.96
Q1 20252025-03-31$31.52B-$74.0M-0.2%-0.24
Q4 2024derived2024-12-31$33.14B$371.0M1.1%n/a
Q3 20242024-09-30$35.11B$622.0M1.8%1.87

Fiscal years, with buybacks and dividends

Fiscal yearEndsRevenueNet incomeOperating cash flowCapexBuybacksDividends
FY 20252025-12-31$132.70B$4.05B$8.25B$3.49B$3.49B$1.14B
FY 20242024-12-31$138.86B$3.44B$8.66B$2.53B$9.19B$1.15B
FY 20232023-12-31$148.38B$9.68B$14.12B$1.89B$11.57B$1.26B
FY 20222022-12-31$177.45B$14.52B$16.36B$2.42B$11.92B$1.28B
FY 20212021-12-31$119.98B$9.74B$4.36B$1.46B$4.65B$1.48B

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 2026-07-30 from the cover page.

What this page is

Marathon Petroleum Corp 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 Marathon Petroleum Corp (MPC), SEC CIK 1510295, listed on NYSE, classified by the SEC as petroleum refining. 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 2026-08-04.JSON and CSV
Planned sales
SEC EDGAR Form 144EDGAR read every 30 minutes; a notice is filed on or before the sell order. Latest 2026-08-31.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 2026-08-31.JSON and CSV
Company record
EDGAR filing index for CIK 1510295Ticker, 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.

Datasets

Frequently Asked Questions

How much of MPC is sold short?
6,521,760 shares were held short at the 2026-08-14 settlement, 2.5 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 MPC's daily short volume?
On 2026-09-11, 640,744 of the 1,051,592 MPC shares reported to FINRA were sold short, 60.9% of the day's reported volume. Short volume is a flow for one day, not a position.
Does MPC have fails to deliver?
The SEC's latest file shows 42,326 MPC shares failed to deliver at settlement 2026-08-04. Fails are reported per settlement date and published twice a month with a lag.
Are MPC insiders buying or selling?
Insiders at MPC reported 7 open-market sells worth $8.0M 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: Lyon Shawn M (SVP Log &amp; Storage, MPLX GP LLC) on 2026-08-31.
Have MPC insiders filed to sell?
7 Form 144 notices on file for MPC worth $10.2M at the prices reported; 7 in the last 90 days worth $10.2M. Latest: Lyon Shawn M filed on 2026-08-31 to sell 1,000 shares ($376K) from 2026-08-31.
What did MPC report last quarter?
In Q2 2026 (quarter ended 2026-06-30) Marathon Petroleum Corp reported revenue of $51.99B, up 53.8% from the same quarter a year earlier, and net income of $5.14B (17.73 diluted EPS). In FY 2025 it generated $8.25B of operating cash flow and spent $3.49B on buybacks and $1.14B on dividends. As of 2026-06-30, cash was $7.77B against $2.12B of debt.
Which funds hold MPC?
8 of the 30 tracked managers held MPC at their latest 13F, $1.12B in total at quarter-end prices. Two Sigma Investments is the largest at $335.2M (0.2% of its portfolio) as of 2026-06-30. Over the prior quarter 5 added shares and 3 cut.

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