UnitedHealth Surges 1.61% on $4.44 Billion Volume Spike Ranks 15th in Market Activity as Institutional Buying Accelerates

On September 5, 2025, , , . The rally aligns with growing institutional interest and bullish technical indicators.

Recent analysis highlights strong institutional accumulation, , suggesting potential filings by major investors like Berkshire Hathaway or Dodge & Cox to exceed 5% ownership by mid-October. , despite muted market reactions to DOJ-related news.

Long-term fundamentals remain robust, , . , with AI-driven cost reductions in claims processing and Optum Health enhancing operating leverage. , .

Short-term catalysts include policy tailwinds, such as potential reversals of Medicare cuts, and $7 trillion in money market assets poised to flow into institutional positions. , , indicating limited bearish pressure.

To run this back-test precisely I need to nail down a few practical details: 1. Universe • Which market(s) should be scanned each day for the “top-500 by trading volume”? 2. Trade price convention • Buy at the same-day close or at the next-day open? 3. Weighting method • Equal weight for each of the 500 names (default) or volume-weighted / cap-weighted? 4. Transaction costs (if any) • Commission, slippage, fees to include? 5. Risk-control rules • Any stop-loss, take-profit, max holding days beyond the 1-day rule, etc.? Let me know—or feel free just to say “use the defaults you listed,” and I’ll proceed with data retrieval and run the back-test from 2022-01-03 through the most recent available trading day.