Today's Lists at Stockpickr: Sept. 21

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After the market close, Stockpickr updates a series of portfolios called Today's Lists with information from that trading day. It's a useful tool for getting a quick picture of how the market moved that day.

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Here's a sampling of what made Today's Lists today, Sept. 21:

52-Week Highs: NetApp(NTAP Quote) rose to a new high of $25.89 on Monday before closing up 3.6% for the day at $25.63. In a note released Sunday, Goldman Sachs upgraded NetApp to its conviction buy list and increased its price target on the stock to $32 from $23.

ConAgra(CAG Quote) rose to $22.73 before closing up a penny at $22.33, in anticipation of its first-quarter earnings report, scheduled for Tuesday. On Friday's "Mad Money" show, Jim Cramer said he'd be looking to the earnings reports of ConAgra and General Mills(GIS Quote) this week to get a read on the broader market and would sell more-cyclical names if these defensive stocks received earnings boosts.

For more stocks making new highs today, check out the 52-Week Highs list.

Biggest % Gainers: AIG(AIG Quote) soared 21.3% to $48.40 on Monday after a Bloomberg report that the government might restructure the insurer's bailout package, including by extending its repayment deadline.

For more stocks on the rise, check out the Biggest % Gainers list.

Biggest % Losers: Delta Petroleum(DPTR Quote) lost almost half its value on Monday, plunging 44.9% to $2.21 after disappointing test results that revealed lower-than-expected gas volumes out of the Columbia River Basin.