Police arrested 124 people by 12:15 p.m. ET near the New York Stock Exchange, but the Occupy protests remained peaceful.
About 300 people observing the anniversary marched together Saturday. A total of 167 protesters had been arrested between Saturday and Monday.
The movement protesting corporate greed quickly grew out of hand last year without any organized leadership. The movement later lost its ability to organize since New York City Mayor Michael Bloomberg evicted the protesters from Zuccotti Park last November.
Supporters of the Occupy Wall Street movement in San Francisco celebrated their first year with peaceful demonstrations that so far have yielded no arrests.
Police kept watch Monday as crowds that reached about 250 people protested outside banks and the Federal Reserve and briefly blocked an intersection and stalled streetcars during a march through the city's Financial District.
Marches and rallies were planned in more than 30 cities internationally.
ABC News and the Associated Press contributed to this story.