1. Amedisys is being replaced by Twilio in the S&P MidCap 400. 2. UnitedHealth Group has acquired Amedisys in a completed deal. 3. The change takes effect before trading opens on August 19, 2025. 4. AMED's deletion may impact investor sentiment towards the stock. 5. Twilio's addition could shift focus away from health care stocks.
Amedisys’ exclusion from the S&P MidCap 400 typically leads to diminished visibility and investor confidence, as seen historically with other companies exiting prominent indexes, which tend to experience a downturn in stock price due to reduced institutional ownership and trading volume.
The acquisition and subsequent removal from the index are highly significant, likely altering stockholder base and public perception, drastically affecting stock volatility and market performance.
The immediate effect of being removed from a major index often results in a sharp price drop, with potential for stabilization over a longer period as the market adjusts. Similar instances in the past have shown that stocks can remain under pressure following index removals.
NEW YORK, Aug. 14, 2025 /PRNewswire/ -- Twilio Inc. (NYSE:TWLO) will replace Amedisys Inc. (NASD: AMED) in the S&P MidCap 400 effective prior to the opening of trading on Tuesday, August 19. S&P 500 and S&P 100 constituent UnitedHealth Group Inc. (NYSE:UNH) acquired Amedisys in a deal completed today.
Following is a summary of the changes that will take place prior to the open of trading on the effective date:
Effective Date | Index Name | Action | Company Name | Ticker | GICS Sector | |
August 19, 2025 | S&P MidCap 400 | Addition | Twilio | TWLO | Information Technology | |
August 19, 2025 | S&P MidCap 400 | Deletion | Amedisys | AMED | Health Care | |
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