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Looks like it's also on increases, yes: https://www.sec.gov/oiea/investor-alerts-bulletins/investor-alerts-circuitbreakersbulletinhtm.html https://www.sec.gov/

• evanpw 7y ago
  Single-stock volatility halts happen in either direction, but market-wide circuit breakers only happen on down moves.
• mattkrause 7y ago
  Limit-up/Limit-down applies to individual equities that are moving strongly in either direction. The market-wide circuit breakers, which triggered this morning, only apply to declines.
• andrewla 7y ago
  The limits for individual stocks are up/down limits, but the market-wide halts are only for declines.