Stock Market Update

25-Aug-25 14:30 ET
S&P 500 slips as Dexcom, Moderna, and CSX drag; Western Digital, Seagate buck trend with gains
Dow -281.48 at 45350.26, Nasdaq +27.60 at 21522.74, S&P -10.85 at 6456.06

[BRIEFING.COM] The S&P 500 (-0.17%) is in second place on Monday afternoon, down now about 10 points.

Briefly, S&P 500 constituents Dexcom (DXCM 76.91, -5.35, -6.50%), Moderna (MRNA 25.81, -1.31, -4.83%) and CSX (CSX 32.89, -1.69, -4.89%) pepper the bottom of the standings. DXCM is down due in part to broad sector weakness in diabetes/insulin names (Tandem (TNDM 12.15, +0.22, +1.84%), Insulet (PODD 329.61, -1.16, -0.35%) also lower), while CSX slides as Warren Buffett's comments ruling out a rail acquisition, coupled with last week's CSX-BNSF partnership, deflate investor hopes for a takeover premium that had recently buoyed the stock.

Meanwhile, Western Digital (WDC 79.66, +2.69, +3.49%) is outperforming alongside peer Seagate (STX 164.35, +5.14, +3.23%) despite a dearth of corporate news.

Cookies are essential for making our site work. By using our site, you consent to the use of these cookies. Read our cookie policy to learn more.