POST vs WK: Which Is the Better Buy in 2026?
Last updated September 2026
Short answer
POST and WK are similarly sized, but POST trades noticeably cheaper on forward earnings (11.61x vs 18.94x): the market is paying up for WK's profile and pricing POST more conservatively, or for faster growth. Which you prefer comes down to the drivers you believe, and whether adding either over-concentrates what you already own.
POST vs WK: the tie-breaker metrics
Same yardstick, side by side (as of September 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.
| Metric | POST | WK | What it tells you |
|---|---|---|---|
| Market cap | $3.79B | $4.17B | Size. The larger name is the incumbent; the smaller has more room to grow and more to prove. |
| Forward P/E | 11.61 | 18.94 | Valuation on next year's expected earnings, the same yardstick for both. Lower is cheaper for that growth; higher means the market is paying up. |
| Trailing P/E | 15.20 | 91.31 | Valuation on the last 12 months. A big drop from trailing to forward means the market expects earnings to jump, so more growth is already in the price. |
| Beta | 0.32 | 0.44 | Volatility vs the market. Above 1 swings harder than the index; below 1 is steadier. Higher beta means bigger drawdowns to hold through. |
| Price vs 52-week range | 20% of range | 62% of range | Where today's price sits between the 52-week low and high. Near the high is momentum with less margin of safety; near the low is out of favor or a discount, depending on why. |
Reading it: POST is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.
Before you buy: how POST and WK affect your concentration
The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. POST and WK share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.
This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined POST and WK exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.
What does Post Holdings (POST) do?
Post Holdings is a St. Louis based consumer packaged goods holding company built by serial acquisition out of the old Ralcorp and Post cereal assets. It reports in four segments: Post Consumer Brands (North American ready-to-eat cereal, granola, pet food and nut butters, including Honey Bunches of Oats, Pebbles, Grape-Nuts and the pet brands acquired from Smucker), Weetabix (UK cereal, muesli and protein shakes), Foodservice (egg and potato products sold to restaurants, schools and other away-from-home channels), and Refrigerated Retail (side dishes, eggs, cheese and sausage under names like Bob Evans Farms). Foodservice is the segment most investors underestimate, because Post is one of the largest processors of value-added eggs in the United States and that business, not cereal, has driven much of the recent profit growth.
What does Workiva Inc. (WK) do?
Workiva (NYSE: WK) sells a single cloud platform for regulated reporting. Finance, audit, risk and sustainability teams pull figures from their ERP, general ledger and other systems, assemble documents that stay linked back to those sources, and file the result with regulators. The original wedge was SEC filings and XBRL tagging, where changing one number has to flow through every table and footnote that uses it. From there the company added SOX and internal controls, statutory reporting, ESEF filings in Europe, and sustainability disclosure. Around 92% of revenue is subscription and support, spread across roughly 6,750 customer organizations including a large share of the Fortune 500.
POST vs WK: how do they differ?
Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.
- POST drivers: Value-added egg and Foodservice economics; Capital allocation and deleveraging.
- WK drivers: Large accounts, not logo count; The margin turn arrived a year early.
Which fits which kind of investor
A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: Leverage is the defining risk: with long-term debt near $7.6 billion and net leverage around 4.5 times adjusted EBITDA, refinancing at higher coupons (a recent issue priced at 6.250 percent) directly reduces the cash available to equity holders. For WK, european scope is the clearest risk.
POST or WK: which should you pick?
POST vs WK: the full fundamentals
POST. POST trades at a mid-teens trailing earnings multiple and roughly 8 times adjusted EBITDA on an enterprise-value basis, a discount to large-cap packaged food peers that reflects the leverage and the low-growth categories. Because interest expense consumes a meaningful share of EBITDA, earnings per share is far more sensitive to refinancing rates and buyback pace than to a point of revenue growth. The absence of a dividend means the valuation case rests on free cash flow per share compounding through share count reduction.
WK. At ~$74 a share the market value is ~$4.17B. Netting out ~$815M of cash and adding back ~$773M of converts puts enterprise value near ~$4.1B, roughly 4x the ~$1.04B of revenue guided for 2026 and about 19x the free cash flow that a ~21% margin implies. Software growing in the high teens with cash margins near 20% carried far richer multiples in 2021; the market now pays for steady compounding rather than acceleration, and Workiva is priced accordingly.
Headline figures (approximate, August 2026): POST shows revenue (ttm) ~$7.9 billion, q3 fy2026 net sales ~$1.95 billion, down ~2% year over year, q3 fy2026 adjusted ebitda ~$377 million, fy2026 adjusted ebitda guidance ~$1.56 to $1.57 billion (narrowed); WK shows revenue (ttm) ~$966M, q2 2026 revenue growth ~19% year over year, subscription also ~19%, non-gaap operating margin (q2 2026) ~16.8%, up from ~3.8%, 2026 free cash flow margin guidance ~21% on ~$1.04B of revenue.
The bottom line: POST vs WK
POST and WK are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined POST and WK exposure against your real portfolio. It is not an investment adviser.
Wondering how POST or WK fits the portfolio you already own? Walnut is an AI investing app that connects your brokerage read-only and answers questions like that about your actual holdings: overlap, concentration, and how each position tracks the S&P 500. Compare the best AI portfolio analyzers or see the best AI investing apps in 2026.
Investing in Post Holdings with AI
Connect the broker you already use and ask Walnut's AI how POST fits what you actually hold: whether you own it already through a fund, what it would do to your concentration, and how it has tracked the S&P 500. Read-only by default, and you approve anything before it reaches your broker.
FAQ
What is the difference between POST and WK?
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Post Holdings is a St. Workiva (NYSE: WK) sells a single cloud platform for regulated reporting. They show up together because they share investment themes, but they are different businesses, so the better fit depends on which thesis you are expressing.
Is POST or WK the better stock?
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Neither is universally better; they suit different views and risk levels. Walnut is informational, not investment advice. Compare what each does, the tie-breaker metrics above, and the risks, then decide which fits your thesis and what you already own.
Which is cheaper, POST or WK?
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On forward P/E (as of September 2026), POST trades at 11.61x and WK at 18.94x, so POST is the cheaper of the two on next year's expected earnings. A lower multiple is not automatically the better buy: a richer valuation can be justified by faster growth, and a lower one can reflect real risk. Weigh the multiple against how fast each business is compounding.
Should you own both POST and WK?
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Because they share themes, owning both concentrates you in that theme. That can be intentional (a focused bet) or accidental (less diversification than it looks). Walnut can show your combined exposure across both, and whether adding either over-concentrates you, before you buy.
What are the risks of POST vs WK?
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POST: Leverage is the defining risk: with long-term debt near $7.6 billion and net leverage around 4.5 times adjusted EBITDA, refinancing at higher coupons (a recent issue priced at 6.250 percent) directly reduces the cash available to equity holders. Input costs are unusually volatile for a food company because avian influenza can reprice the egg complex within weeks, and grain, packaging and freight costs feed through the rest of the portfolio with a lag. Volume declines in ready-to-eat cereal and private-label trade-down at retail limit how far pricing can carry results. Post pays no dividend, so total return depends entirely on earnings growth and buybacks rather than income. Finally, an acquisition-driven holding company carries integration and goodwill risk, and a leadership transition adds uncertainty about whether the historic deal-making cadence continues at the same pace. WK: European scope is the clearest risk. Directive (EU) 2026/470 raised CSRD thresholds to roughly 1,000 employees and EUR 450M of turnover and fully exempted listed SMEs, which removes a large slice of the mandated buyers the sustainability products were sized for. Competition arrives from two directions at once: disclosure specialists that undercut on the filing piece, and close and controls platforms expanding toward reporting. The ~$773M of convertible notes sits against ~$815M of cash and securities, so the balance sheet is comfortable, though conversion becomes a dilution question at higher share prices. Retention around 111% is decent but below what the stock was once valued on, and with customer count growing about 4% there is little new-logo volume to offset a further slip. Platform consolidation deals take a long time to close, so a budget freeze shows up as delayed expansions rather than churn, which makes it slow to detect.
Walnut is informational, not investment advice. This page is descriptive and not a recommendation to buy or sell POST or WK; figures are approximate and dated (as of September 2026). Verify current data before investing.