NEW YORK ( TheStreet) -- Goldman Sachs' financial sector analysts have added three new companies to their "conviction buy" list for the Americas, while announcing ratings changes on four other companies as well. In order to add to its current picks Goldman's financial sector team dropped three companies from its list. T Rowe Price ( TROW - Get Report) fell off the list to make room for another asset manager. Despite knocking T Rowe Price off the list, Goldman's analysts see it benefitting from increased demand for retirement asset management products and increased investor risk appetite as the market has stabilized somewhat coming out of the crisis. Goldman also dropped Digital Realty Trust ( DLR - Get Report) from its conviction buy list, as the analysts "see fewer identifiable catalysts for the shares over the next six months" and potential upside from their $64 price target is just 6%. Nonetheless, they see this company, a real estate investment trust, as offering "unique value relative to an expensive REIT sector." As a result, they left the "buy" recommendation in place on the name. Goldman also made several ratings changes in the online broker space unrelated to the "conviction buy" list, upgrading E*Trade ( ETFC - Get Report) to "buy" from "neutral," while dropping TD Ameritrade ( amtd) to "neutral" from "buy." Goldman's analysts argue E*Trade is better-positioned than TD Ameritrade to weather the traditionally slow trading period that is characteristic of the summer months. Other positives Goldman analysts cite for E*Trade are the fact that it was better-positioned for the recent decline in interest rates and the fact that its creditworthiness is improving. E*Trade's share price performance has lagged rivals like Ameritrade and The Charles Schwab Corp. ( SCHW) year to date. Even after getting a lift on Monday's upgrade, E*Trade shares are roughly flat so far in 2011 versus a more than 5% gain for Schwab and more than 10% for Ameritrade. Still, the note suggests E*Trade would be hurt if rates start to rise. "E*Trade's strategy for its interest rate sensitivity is to manage it to a position of overall neutrality. Thus, it will have more stability in a period of falling rates, such as 2Q to date, but less when rates rise as it has swapped its variable rate exposure for fixed performance," Goldman's analysts write. Here, then, are the three stocks Goldman's financials research team added to their conviction list on Monday.