Max pain is the price where the total value of all open calls and puts would be lowest at expiration, so option buyers as a group would lose the most. Some traders watch it as a level the stock may drift toward near expiration, because option sellers, often market makers, hedge their positions in ways that can pull the price toward heavily traded strikes. It is a theory, not a guarantee.

As of the Nov 4, 2026 close, max pain for Pacific Biosciences of California options about one week from expiration was $2.01. The chart above shows the exact max pain for each expiration date.

Pacific Biosciences of California closed above its near-term max pain on 18 of the last 20 trading days. On Nov 4, 2026 it closed at $2.57, 27.8% above max pain of $2.01.

Over the last 20 trading days, near-term max pain for Pacific Biosciences of California ranged from $1.50 to $2.03. It went from $2.00 on Oct 8, 2026 to $2.01 on Nov 4, 2026. See the PACB max pain history for a longer view.

Pacific Biosciences of California Inc is a biotechnology company focused on designing, developing, and manufacturing sequencing solutions that enable scientists and clinical researchers to improve their understanding of the genome and ultimately, resolve genetically complex problems.