Arm shares fell 5.3% to $57.50, after rising as high as $69 on Friday, its second day of trading.
Some 29,000 Arm options contracts changed hands by 11:45 a.m. (1545 GMT) on Monday, the first day options were available for trading, with volume projected to hit 63,000 by the end of the day, according to options analytics service Trade Alert.
The 2012 listing of options on Facebook Inc, now known as Meta Platforms, holds the record for the most active options market debut with some 360,000 contracts changing hands on the first day of trading.
About 80% of the options trading volume was concentrated in contracts set to expire on Oct. 20, with much of the volume in puts, typically used to guard against or bet on share price declines.
On Monday, puts that would guard against Arm shares slipping below $55 by mid-October were the most actively traded Arm options with some 4,500 contracts traded.
Persons:
Rene Haas, Brendan McDermid, Ophir Gottlieb, Gottlieb, Matt Amberson, Amberson, Saqib Iqbal Ahmed, Richard Chang
Organizations:
Nasdaq, REUTERS, SoftBank's Arm Holdings, Facebook Inc, Los, Market Laboratories, Arm, Thomson
Locations:
New York, U.S, Los Angeles