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IRIDIAN ASSET MANAGEMENT LLC/CT

Position in POST — Post Holdings, Inc.

CIK 1033427 WESTPORT, CT

Position in POST

as of Jun 30, 2026 · filed Jul 29, 2026
Position Value
$19,849,056
+$1,859,601 QoQ
Shares Held
224,893
+23.6% QoQ
Ownership
0.512%
of shares outstanding
% of Portfolio
6.83%
of 13F equity value
Holder Rank
#43
of 415 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in POST Over Time

Shares Held

Position Value (USD)

Derivatives in POST

reported options exposure · as of Mar 31, 2022
CallValue
$2,770,400
CallShares
40,000
PutValue
$0
PutShares
0

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Packaged Foods

Consumer Defensive · as of Jun 30, 2026

IRIDIAN ASSET MANAGEMENT LLC/CT holds $50,865,419 across 3 Packaged Foods names. POST ranks #2 (39.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
2 POST
Post Holdings, Inc.
This page
224,893 $19,849,056

All Filings in POST

Export CSV
35 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $19,849,056 224,893
2026-03-31 $17,989,455 181,969
2025-12-31 $16,751,831 169,125
2025-09-30 $12,798,825 119,081
2025-06-30 $15,259,293 139,955
2025-03-31 $20,208,706 173,674
2024-12-31 $23,580,247 206,013
2024-09-30 $19,815,011 171,188
2024-06-30 $22,160,769 212,757
2024-03-31 $22,823,523 214,749
2023-12-31 $21,719,910 246,649
2023-09-30 $24,704,180 288,129
2023-06-30 $41,559,073 479,620
2023-03-31 $45,805,301 509,684
2022-12-31 $51,714,105 572,946
2022-09-30 $54,479,160 665,110
2022-06-30 $65,297,456 792,926
2022-03-31 $2,770,400 40,000
2022-03-31 $46,059,077 665,017
2021-12-31 $4,509,201 40,000
2021-12-31 $64,090,518 568,531
2021-09-30 $8,812,795 80,000
2021-09-30 $137,672,161 1,249,748
2021-06-30 $217,627,421 2,006,338
2021-06-30 $4,338,798 40,000
2021-03-31 $4,228,801 40,000
2021-03-31 $224,767,017 2,126,059
2020-12-31 $217,730,824 2,155,538
2020-12-31 $2,020,199 20,000
2020-09-30 $584,799 6,800
2020-09-30 $189,962,658 2,208,869
2020-06-30 $490,671 5,600
2020-06-30 $198,024,857 2,260,043
2020-03-31 $464,631 5,600
2020-03-31 $194,782,889 2,347,632