WDH vs ACMR

For growth investors, ACM Research, Inc.

(ACMR) is the stronger pick with 15. 2% revenue growth year-over-year, versus 5. 4% for Waterdrop Inc. (WDH). Waterdrop Inc. (WDH) offers the better valuation at 10. 8x trailing P/E (8. 7x forward), making it the more compelling value choice. Analysts rate Waterdrop Inc. (WDH) a "Buy" — based on 3 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

On trailing P/E, Waterdrop Inc.

(WDH) is the cheapest at 10. 8x versus ACM Research, Inc. at 40. 4x. On forward P/E, Waterdrop Inc. is actually cheaper at 8. 7x.

Over the past 5 years, ACM Research, Inc.

(ACMR) delivered a total return of +120. 6%, compared to -82. 3% for Waterdrop Inc. (WDH). Over 10 years, the gap is even starker: ACMR returned +28. 6% versus WDH's -82. 3%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), Waterdrop Inc.

(WDH) is the lower-risk stock at 1. 22β versus ACM Research, Inc. 's 3. 24β — meaning ACMR is approximately 165% more volatile than WDH relative to the S&P 500. On balance sheet safety, Waterdrop Inc. (WDH) carries a lower debt/equity ratio of 5% versus 16% for ACM Research, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), ACM Research, Inc.

(ACMR) is pulling ahead at 15. 2% versus 5. 4% for Waterdrop Inc. (WDH). On earnings-per-share growth, the picture is similar: Waterdrop Inc. grew EPS 132. 6% year-over-year, compared to -10. 5% for ACM Research, Inc.. Over a 3-year CAGR, ACMR leads at 32. 3% annualised revenue growth. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

Waterdrop Inc.

(WDH) is the more profitable company, earning 13. 3% net margin versus 10. 4% for ACM Research, Inc. — meaning it keeps 13. 3% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ACMR leads at 12. 1% versus 6. 4% for WDH. At the gross margin level — before operating expenses — WDH leads at 52. 6%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

On forward earnings alone, Waterdrop Inc.

(WDH) trades at 8. 7x forward P/E versus 27. 8x for ACM Research, Inc. — 19. 0x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for WDH: 25. 8% to $2. 00.

All stocks in this comparison pay dividends.

Waterdrop Inc. (WDH) offers the highest yield at 3. 9%, versus 0. 2% for ACM Research, Inc. (ACMR).

For long-horizon retirement investors, Waterdrop Inc.

(WDH) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 1. 22), 3. 9% yield). ACM Research, Inc. (ACMR) carries a higher beta of 3. 24 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (WDH: -82. 3%, ACMR: +28. 6%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

These companies operate in different sectors (WDH (Financial Services) and ACMR (Technology)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: WDH is a small-cap deep-value stock; ACMR is a small-cap high-growth stock. WDH pays a dividend while ACMR does not, making them suitable for different income and tax situations. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.