Almanac Realty Investors has invested $200m (€160.3m) in Winter Properties.
The capital will be used to buy New York City real estate in the value-added sector.
The company is targeting the office, apartment and retail sectors.
Almanac made the investment for its Almanac Realty Securities VI fund.
Andrew Silberstein, a partner with Almanac, said the investment would not be the last for the fund, with more capital to invest.
Winter Properties, he added, had a successful track record in investing and managing real estate assets in the New York City area.
Almanac has previously committed to other real estate companies owning and operating property in the region.
“We recently ended our investment with RXR Realty, which also invests in New York City,” Silberstein said.
“Our new and first investment with Winter Properties comes at a good time for us.”
Almanac, under the name of Rothschild Realty, had made a $150m commitment to RXR in July of 2010 for its Five Arrows Realty Securities V fund.
Almanac is raising capital for its next fund, Almanac Realty Securities VII, with a targeted raise of $1bn.