Stock Market Today: Nasdaq Posts Back-To-Back Losses As Oil Surges; Samsara Breaks Out

The Dow Jones index dropped 650 points Friday as oil prices rallied, and the Nasdaq posted back-to-back losses. The session handed bulls a second consecutive down day in the growth-heavy index and put crude squarely at the center of the tape.

Oil's rally was the named driver of the selloff. A 650-point slide in the Dow is a large move for the blue-chip benchmark, and the pairing of surging crude with falling equities marks energy costs as the variable moving the broader market.

Under the surface, individual names still drew buyers and sellers. Samsara broke out even as indexes sank, a sign that stock-specific strength is surviving a weak tape. Earnings were the other catalyst: Bloom, MaxLinear and Western Digital were the session's named earnings movers, meaning their post-report reactions carried more weight than index direction for traders working those names.

Interpretation: a breakout in Samsara on a 650-point Dow drop suggests relative strength is being rewarded, while the oil spike raises the question of whether pressure on the S&P 500 extends into next week. Back-to-back Nasdaq losses show momentum has turned short term.