XOOMAR

Post Holdings (POST)

Post Holdings 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 NYSE, classified by the SEC as grain mill products.

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5.6M

Short interest

settlement 2026-09-30

5.5

Days to cover

-0.6 days vs prior

64.2%

Short share of volume

2026-10-09

5,447

Fails to deliver

settlement 2026-09-08

Thu 19 Nov

Next earnings

estimated date

-$32.3M

Insider flow, 90 days

0 buys, 4 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 POST is 5,565,956 shares, down 378,603 shares over the last month. Over the last 48 readings it ranged from 1,622,990 shares (31 October 2024) to 7,064,057 shares (31 July 2026). At the reported average volume of 1.0M shares a day that is 5.5 days to cover.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-09-305,565,956-5.5%1,005,7315.53
2026-09-155,888,798-0.9%952,2256.18
2026-08-315,944,559-7.2%882,1536.74
2026-08-146,408,651-9.3%1,265,7905.06
2026-07-317,064,057+15.2%836,5908.44
2026-07-156,134,017+4.2%895,1846.85
2026-06-305,887,804-12.9%893,4456.59
2026-06-156,760,480+2.6%851,4557.94
2026-05-296,590,844+4.9%839,6417.85
2026-05-156,283,067+6.4%923,3006.81
2026-04-305,907,562+6.8%702,1418.41
2026-04-155,533,539+2.0%632,4848.75
2026-03-315,422,220+0.2%922,7835.88
2026-03-135,413,341+2.8%632,0168.57
2026-02-275,264,130-1.4%670,0847.86
2026-02-135,339,945-2.0%1,299,4774.11
2026-01-305,450,413+3.4%769,1927.09
2026-01-155,271,249+3.7%758,4916.95
2025-12-315,084,385+11.8%690,3787.36
2025-12-154,549,260+10.1%944,1944.82
2025-11-284,130,304+5.3%1,147,6453.60
2025-11-143,920,989-0.1%621,3456.31
2025-10-313,923,263+4.5%620,8076.32
2025-10-153,755,116+6.3%482,6667.78

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 9 October 2026, the short share of POST volume is 64.2%, down 0.5 points over the last five sessions. Over the last 30 readings it ranged from 35.1% (2 September 2026) to 77.6% (4 September 2026). The latest reading is in line with the 30-session average of 65.2%, on 222K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-10-09142K222K64.2%0
2026-10-08145K237K61.1%0
2026-10-07170K268K63.5%0
2026-10-06149K237K62.8%0
2026-10-05207K354K58.6%0
2026-10-02194K300K64.7%0
2026-10-01162K264K61.4%188
2026-09-30149K220K67.8%1
2026-09-29259K334K77.5%612
2026-09-28196K297K65.9%5
2026-09-25183K316K57.8%2,256
2026-09-24202K278K72.6%0
2026-09-23216K322K67.0%0
2026-09-22384K575K66.7%336
2026-09-21297K444K66.9%1
2026-09-18277K394K70.2%100
2026-09-17283K437K64.6%0
2026-09-16211K332K63.6%8
2026-09-15446K580K76.8%1
2026-09-14267K408K65.3%22
2026-09-11127K208K61.0%8
2026-09-10136K202K67.0%5
2026-09-09241K346K69.8%3
2026-09-08274K368K74.5%573
2026-09-04247K318K77.6%0
2026-09-03164K250K65.8%0
2026-09-02185K526K35.1%0
2026-09-01217K362K59.9%11
2026-08-31183K269K68.1%0
2026-08-28225K381K59.1%0

Fails to deliver

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

As of 8 September 2026, the fails-to-deliver balance in POST is 5,447 shares, up 5,446 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (18 August 2026) to 62,694 shares (6 July 2026). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-09-085,447$84.64$461K
2026-09-041$84.26$84
2026-09-031$84.32$84
2026-08-181$79.35$79
2026-08-132$80.58$161
2026-08-101,541$78.69$121K
2026-07-313$92.96$279
2026-07-308$97.53$780
2026-07-20625$86.86$54K
2026-07-1354$86.28$5K
2026-07-07242$88.50$21K
2026-07-0662,694$92.78$5.8M
2026-07-01911$88.26$80K
2026-06-2918,850$89.41$1.7M
2026-06-24806$88.93$72K
2026-06-227$88.41$619
2026-06-12904$93.17$84K
2026-06-0853$90.43$5K
2026-06-0323$90.62$2K
2026-06-02737$89.13$66K
2026-05-2711,340$95.87$1.1M
2026-05-26505$97.17$49K
2026-05-22551$97.27$54K
2026-05-2026$97.69$3K
2026-05-1988$99.61$9K
2026-05-187,529$101.07$761K
2026-05-151,246$102.78$128K
2026-05-149,982$104.31$1.0M
2026-05-13113$102.75$12K
2026-05-072,929$103.74$304K

Insider trades

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

Insiders at POST reported 4 open-market sells worth $32.3M in the last 90 days and no open-market buys. Latest filing: STIRITZ WILLIAM P (Chairman Emeritus) on 2026-09-02.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-09-02STIRITZ WILLIAM PChairman EmeritusSell228$85.01$19K0
2026-09-02STIRITZ WILLIAM PChairman EmeritusSell278K$84.23$23.4M228
2026-09-01STIRITZ WILLIAM PChairman EmeritusSell6K$84.63$525K278K
2026-09-01STIRITZ WILLIAM PChairman EmeritusSell100K$83.54$8.4M284K
2026-08-25Zadoks Jeff ADirectorGift123K$0.00$0123K
2026-08-25Zadoks Jeff ADirectorGift26K$0.00$074K
2026-08-25Zadoks Jeff ADirectorGift123K$0.00$00
2026-08-25Zadoks Jeff ADirectorGift26K$0.00$02K
2026-07-02Zadoks Jeff ADirectorTax withholding4K$90.94$323K28K
2026-07-02Zadoks Jeff ADirectorTax withholding4K$90.94$352K32K
2026-07-02Zadoks Jeff ADirectorTax withholding3K$90.94$231K35K
2026-05-13CURL GREGORY LDirectorSell6K$105.05$650K15K
2026-04-05Pearson Gregory CarlPRES & CEO, PCBGrant3K$0.00$08K
2026-04-05Pearson Gregory CarlPRES & CEO, PCBGrant6K$0.00$06K
2026-03-16Zadoks Jeff ADirectorGrant2K$0.00$038K
2026-03-16Atkinson Michelle MarieDirectorGrant2K$0.00$02K
2026-02-09CURL GREGORY LDirectorSell7K$114.31$798K21K
2026-02-03SKARIE DAVID PDirectorGrant2K$0.00$057K
2026-02-03KEMPER DAVID WDirectorGrant2K$0.00$033K
2026-02-03JOHNSON JENNIFER KUPERMANDirectorGrant2K$0.00$09K
2026-02-03ERB THOMAS CDirectorGrant2K$0.00$039K
2026-02-03CURL GREGORY LDirectorGrant2K$0.00$028K
2026-02-03BURWELL DOROTHY MDirectorGrant2K$0.00$09K
2026-01-09HARPER BRADLY ASVP, CHIEF ACCTING OFFICERTax withholding478$98.43$47K11K
2026-01-02Zadoks Jeff AEVP & COOTax withholding458$99.05$45K36K
2026-01-02Zadoks Jeff AEVP & COOOption exercise10K$0.00$037K
2026-01-02Zadoks Jeff AEVP & COOTax withholding420$99.05$42K27K
2026-01-02Zadoks Jeff AEVP & COOTax withholding301$99.05$30K27K
2025-12-26GRAY DIEDRE JEVP, GC & CAO, SECYGift131K$0.00$0131K
2025-12-26GRAY DIEDRE JEVP, GC & CAO, SECYGift131K$0.00$034K
2025-12-18STIRITZ WILLIAM POtherOption exercise170Kprice not stated in the filingnot stated4.5M
2025-12-18STIRITZ WILLIAM POtherDisposition170K$101.81$17.3M4.3M
2025-12-17STIRITZ WILLIAM POtherDisposition11K$101.19$1.1M4.3M
2025-12-17STIRITZ WILLIAM POtherOption exercise11Kprice not stated in the filingnot stated4.3M
2025-12-05HARPER BRADLY ASVP, CHIEF ACCTING OFFICERSell2K$96.69$160K11K
2025-12-04MAINER MATTHEW JEVP, CFO & TREASURERGift600$0.00$075K
2025-12-01GRAY DIEDRE JEVP, GC & CAO, SECYJ41K$0.00$0165K
2025-12-01Zadoks Jeff AEVP & COOGift30K$0.00$0153K
2025-12-01MAINER MATTHEW JEVP, CFO & TREASURERTax withholding269$104.03$28K75K
2025-12-01HARPER BRADLY ASVP, CHIEF ACCTING OFFICERTax withholding200$104.03$21K13K
2025-12-01HARPER BRADLY ASVP, CHIEF ACCTING OFFICERTax withholding246$104.03$26K13K
2025-12-01GRAY DIEDRE JEVP, GC & CAO, SECYJ41K$0.00$032K
2025-12-01Zadoks Jeff AEVP & COOGift30K$0.00$028K
2025-11-25CATOGGIO NICOLASPRES & CEO, PCBSell10K$100.21$1.0M76K
2025-11-24KEMPER DAVID WDirectorBuy2K$97.93$176K32K
2025-11-18WESTPHAL MARK WPRES., FOODSERVICEGrant3K$0.00$0198K
2025-11-18WESTPHAL MARK WPRES., FOODSERVICEGrant17K$0.00$0195K
2025-11-18VITALE ROBERT VPRESIDENT & CEOGrant22K$0.00$0987K
2025-11-18VITALE ROBERT VPRESIDENT & CEOGrant45K$0.00$0965K
2025-11-18Zadoks Jeff AEVP & COOGrant9K$0.00$058K

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

6 Form 144 notices on file for POST worth $41.1M at the prices reported; 1 in the last 90 days worth $32.8M. Latest: STIRITZ WILLIAM P filed on 2026-08-31 to sell 384,132 shares ($32.8M) from 2026-08-31.

FiledSellerSharesMarket valueOf outstandingSale fromBroker
2026-08-31STIRITZ WILLIAM PDirector384K$32.8M0.874%2026-08-31Fidelity Brokerage Services LLC
2026-05-13CURL GREGORY LDirector6K$650K0.014%2026-05-13Charles Schwab & Co., Inc.
2026-02-09Sandra ZadoksSpouse of Officer50K$5.7M0.104%2026-02-09Merrill
2026-02-09CURL GREGORY LDirector7K$798K0.015%2026-02-09Charles Schwab & Co., Inc.
2025-12-05HARPER BRADLY AOfficer2K$160K0.003%2025-12-05Charles Schwab & Co., Inc.
2025-11-25CATOGGIO NICOLASOfficer10K$1.0M0.019%2025-11-25Charles Schwab & Co., Inc.

Large holders (13D and 13G)

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

7 holders report 5% or more of POST in their latest filing, 1 on Schedule 13D (active intent). The largest reported stake is William P. Stiritz at 10.3% of the class (4,885,468 shares), filed 2026-03-05 for an event on 2026-03-04.

FiledFormHolderSharesOf classEvent
2026-07-3113G/Ano. 1Vanguard Portfolio Managementinvestment adviser2.2M4.9%2026-06-30
2026-05-1413G/Ano. 10Jason E. Momentparent holding company, individual3.0M6.5%2026-03-31
2026-05-1413G/Ano. 10William F. Duhamel, Jr.parent holding company, individual3.0M6.5%2026-03-31
2026-05-1413G/Ano. 10Route One Investment Company, LLCparent holding company, other entity3.0M6.5%2026-03-31
2026-05-1413G/Ano. 10ROIC, LLCparent holding company, other entity3.0M6.5%2026-03-31
2026-05-1413G/Ano. 10Route One Investment Company, L.P.investment adviser, partnership3.0M6.5%2026-03-31
2026-05-1413G/Ano. 1Gerald W. Hakalaparent holding company, individual1.2M2.6%2026-03-31
2026-05-1413G/Ano. 1Jeffrey A. Hakalaparent holding company, individual1.2M2.6%2026-03-31
2026-05-1413G/Ano. 1Clarkston Companies, Inc.parent holding company, corporation1.2M2.6%2026-03-31
2026-05-1413G/Ano. 1Clarkston Capital Partners, LLCinvestment adviser1.2M2.6%2026-03-31
2026-04-0913G/Ano. 1Dimensional Fund Advisors LPinvestment adviser3.1M6.4%2026-03-31
2026-03-2713G/Ano. 14The Vanguard Groupinvestment adviser00.0%2026-03-13
2026-03-0513D/Ano. 4William P. Stiritzindividual4.9M10.3%2026-03-04

13F holders

Tracked managers holding POST at their latest 13F. JSON

7 of the 30 tracked managers held POST at their latest 13F, $264.0M in total at quarter-end prices. Citadel Advisors is the largest at $89.4M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 5 added shares and 2 cut.

FundQuarterSharesValueOf portfolioChange in shares
Citadel Advisors2026-06-301.0M$89.4M0.01%+794K
Two Sigma Investments2026-06-30640K$56.5M0.04%-752K
Fisher Asset Management2026-06-30481K$42.5M0.01%+23K
AQR Capital Management2026-06-30364K$32.0M0.01%+14K
Millennium Management2026-06-30284K$25.1M0.01%+105K
D. E. Shaw & Co.2026-06-30137K$12.1M0.01%-188K
Bridgewater Associates2026-06-3073K$6.4M0.03%+14K

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 Q3 FY 2025 (quarter ended 2026-06-30) Post Holdings reported revenue of $1.95B, down 1.8% from the same quarter a year earlier, and net income of $63.4M (1.29 diluted EPS). In FY 2024 it generated $998.3M of operating cash flow. As of 2026-06-30, cash was $265.6M against $7.63B of debt.

Cash
$265.6M
Debt
$7.63B
Equity
$3.08B
Total assets
$12.85B
Shares outstanding
43,956,805

Quarterly, last 8 quarters

QuarterPeriod endRevenueNet incomeMarginDiluted EPS
Q3 FY 20252026-06-30$1.95B$63.4M3.3%1.29
Q2 FY 20252026-03-31$2.04B$81.9M4.0%1.56
Q1 FY 20252025-12-31$2.17B$96.8M4.5%1.71
Q4 FY 2024derived2025-09-30$2.25B$51.0M2.3%n/a
Q3 FY 20242025-06-30$1.98B$108.8M5.5%1.79
Q2 FY 20242025-03-31$1.95B$62.6M3.2%1.03
Q1 FY 20242024-12-31$1.97B$113.3M5.7%1.78
Q4 FY 2023derived2024-09-30$2.01B$81.6M4.1%n/a

Fiscal years, with buybacks and dividends

Fiscal yearEndsRevenueNet incomeOperating cash flowCapexBuybacksDividends
FY 20242025-09-30$8.16B$335.7M$998.3M$510.2Mn/an/a
FY 20232024-09-30$7.92B$366.7M$931.7M$429.5Mn/an/a
FY 20222023-09-30$6.99B$301.3M$750.3M$303.0Mn/an/a
FY 20212022-09-30$5.85B$756.6M$382.6M$255.3M$443.0Mn/a
FY 20202021-09-30$4.98B$166.7M$588.2M$190.9M$397.1Mn/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 2026-08-03 from the cover page.

What this page is

Post 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 Post Holdings (POST), SEC CIK 1530950, listed on NYSE, classified by the SEC as grain mill products. 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 2026-09-08.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 2026-08-31.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 2026-07-31.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 2026-08-06.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 1530950Ticker, 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 grain mill products

Datasets

Frequently Asked Questions

How much of POST is sold short?
5,565,956 shares were held short at the 2026-09-30 settlement, 5.5 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 POST's daily short volume?
On 2026-10-09, 142,432 of the 221,848 POST shares reported to FINRA were sold short, 64.2% of the day's reported volume. Short volume is a flow for one day, not a position.
Does POST have fails to deliver?
The SEC's latest file shows 5,447 POST shares failed to deliver at settlement 2026-09-08. Fails are reported per settlement date and published twice a month with a lag.
Are POST insiders buying or selling?
Insiders at POST reported 4 open-market sells worth $32.3M in the last 90 days and no open-market buys. Latest filing: STIRITZ WILLIAM P (Chairman Emeritus) on 2026-09-02.
Have POST insiders filed to sell?
6 Form 144 notices on file for POST worth $41.1M at the prices reported; 1 in the last 90 days worth $32.8M. Latest: STIRITZ WILLIAM P filed on 2026-08-31 to sell 384,132 shares ($32.8M) from 2026-08-31.
Who owns 5% or more of POST?
7 holders report 5% or more of POST in their latest filing, 1 on Schedule 13D (active intent). The largest reported stake is William P. Stiritz at 10.3% of the class (4,885,468 shares), filed 2026-03-05 for an event on 2026-03-04.
What did POST report last quarter?
In Q3 FY 2025 (quarter ended 2026-06-30) Post Holdings reported revenue of $1.95B, down 1.8% from the same quarter a year earlier, and net income of $63.4M (1.29 diluted EPS). In FY 2024 it generated $998.3M of operating cash flow. As of 2026-06-30, cash was $265.6M against $7.63B of debt.
Which tracked 13F managers own POST?
7 of the 30 tracked 13F managers held POST shares at their latest filing, $264.0M in all. The largest: Ken Griffin's Citadel Advisors (1.0M shares, $89.4M), Two Sigma Investments (640K shares, $56.5M), Ken Fisher's Fisher Asset Management (481K shares, $42.5M), Cliff Asness's AQR Capital Management (364K shares, $32.0M), Izzy Englander's Millennium Management (284K shares, $25.1M), D. E. Shaw & Co. (137K shares, $12.1M). The table above lists all 7.

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