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Historical Stock Price
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Video: Compound Annual Growth Rate (CAGR) Definition
POST Historical Price Range
Date Open High Low Close Volume
09/08/2026 $84.39 $84.39 $82.13 $82.36 1.12M
09/09/2026 $81.92 $82.63 $80.76 $81.07 878.40K
09/10/2026 $81.72 $82.00 $79.82 $80.28 593.30K
09/11/2026 $80.47 $80.78 $79.64 $80.19 557.40K
09/14/2026 $81.27 $81.66 $79.00 $79.37 1.26M
About Post Holdings
Post Holdings, Inc. is a consumer-packaged goods holding company. Co. operates through four segments: Post Consumer Brands, Weetabix, Foodservice and Refrigerated Retail. Post Consumer Brands segment includes North American ready-to-eat (RTE) cereal and Peter Pan nut butter. Weetabix segment includes primarily the United Kingdom (the U.K.) RTE cereal, muesli and protein-based ready-to-drink shakes. The Foodservice segment sells primarily egg and potato products. The Refrigerated Retail segment primarily sells side dishes, egg, cheese and sausage products.
POST historical stock prices picture
Post Holdings (POST) has the following price history information. Looking back at POST historical stock prices for the last five trading days, on September 08, 2026, POST opened at $84.39, traded as high as $84.39 and as low as $82.13, and closed at $82.36. Trading volume was a total of 1.12M shares. On September 09, 2026, POST opened at $81.92, traded as high as $82.63 and as low as $80.76, and closed at $81.07. Trading volume was a total of 878.40K shares. On September 10, 2026, POST opened at $81.72, traded as high as $82.00 and as low as $79.82, and closed at $80.28. Trading volume was a total of 593.30K shares. On September 11, 2026, POST opened at $80.47, traded as high as $80.78 and as low as $79.64, and closed at $80.19. Trading volume was a total of 557.40K shares. On September 14, 2026, POST opened at $81.27, traded as high as $81.66 and as low as $79.00, and closed at $79.37. Trading volume was a total of 1.26M shares.

POST Historical Stock Prices By Date:

POST historical cagr picture

Below, we examine the compound annual growth rate — CAGR for short — of an investment into Post Holdings shares, starting with a $10,000 purchase of POST, and working forward through the historical stock price information to today.

Growth of $10,000.00
Without Dividends Reinvested
Start date: 09/16/2016
End date: 09/14/2026
Start price/share: $52.85
End price/share: $79.37
Dividends collected/share: $0.00
Total return: 50.18%
Average Annual Total Return: 4.15%
Starting investment: $10,000.00
Ending investment: $15,017.33
Years: 10.00
POST Historical Closing Prices
Date Close
09/08/2026$82.36
09/09/2026$81.07
09/10/2026$80.28
09/11/2026$80.19
09/14/2026$79.37
Consumer Historical Prices
POST is categorized under the Consumer sector; below are some other companies in the same sector:

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Also explore: POST shares outstanding history

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