-
Only three of 75 financial stocks and one of 30 real estate stocks rose during the month.
-
Message volume on S&P 500 stocks that fell more than 10% rose by a median of 72.5%.
-
FICO lost nearly half its value, yet its Stocktwits watcher count grew 26%, the fastest in the index.
The S&P 500 ended September roughly where it started. Most of its stocks did not, but you wouldn’t know that if you focused only on AI and Big Tech.
Of 499 index companies (discounting secondary listings of Alphabet, Inc., Berkshire Hathaway, Fox Corp. and News Corp.), 387 fell during the month, meaning more than three in four S&P 500 stocks were a losing bet.
The typical S&P 500 stock lost nearly 6% on average, while the index slipped only about 0.4%. A small group of large tech names, led by chipmakers and Meta Platforms Inc. (META), kept the headline number steady and masked how widespread the damage was.
On Stocktwits, retail traders leaned into the selloff instead of stepping away, and chatter rose most on the stocks that fell hardest. The 30-day median message volume for S&P 500 stocks that took a more than 10% beating rose by over 70%.
S&P 500 In September: Narrow Rally, Broad Retreat
Technology was the only sector where most stocks gained, and even there the split was sharp. Chipmakers Intel Corp. (INTC) and Advanced Micro Devices Inc. (AMD) each rallied about 30%, while software names such as Intuit Inc. (INTU) were among the month’s worst performers.
Everywhere else, losses were broad. Only three of 75 financial stocks rose, along with one of 30 real estate stocks and none of the 25 materials stocks.
Rate-sensitive sectors came under pressure after the Federal Reserve’s first rate hike in three years. The 10-year Treasury yield climbed to about 5.3% in the final days of the month, near its highest level since 2007, even after a softer-than-expected inflation report.
By month-end, 83 S&P 500 stocks had a 14-day relative strength index below 30, which puts them in “oversold” territory. Only six were above 70, the “overbought” line. Half of the real estate sector ended the month oversold.
S&P 500’s Forgettable September: How Did Retail Traders React?
Stocktwits data shows retail attention clustered at the extremes. For S&P 500 stocks that fell more than 10% in September, message volume rose a median 72.5% from 30 days earlier. For stocks with milder declines, and even for most gainers, the increase was in the single digits.
