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 Donaldson options about one week from expiration was $79.51. The chart above shows the exact max pain for each expiration date.

Donaldson closed above its near-term max pain on 13 of the last 20 trading days. On Nov 4, 2026 it closed at $85.57, 7.6% above max pain of $79.51.

Over the last 20 trading days, near-term max pain for Donaldson ranged from $78.63 to $90.00. It went from $90.00 on Oct 8, 2026 to $79.51 on Nov 4, 2026. See the DCI max pain history for a longer view.

Donaldson is a leading manufacturer of filtration systems and replacement parts, including air filtration systems, liquid filtration systems, and dust, fume, and mist collectors.