Jim Cramer said that in the first couple of hours of trading on Friday, people who owned stocks and didn't count on a rate cut sold those stocks.

That lasted until about 1 p.m. EDT, when the last of the brokers called their clients and said they had to put up some money for stocks like Sears ( SHLD), which Cramer owns for Action Alerts PLUS , or MasterCard ( MA). "Those all rallied at the end," Cramer said on TheStreet.com TV's Wall St. Confidential Web video Monday.

Taking the NYSE Euronext ( NYX), which he also owns for his charitable trust, as an example, Cramer said people who owned its August $70 call pretty much figured they'd be wiped out. However, in the last 45 minutes "the stock exploded upward," he said.

"I think if you owned that call, you would come in this morning and you would own common stock because you would exercise it," Cramer said. "You may not have sold common against it, perhaps because the whole ramp was too quick for you.

"So you come in and figure 'OK, I will take an early-morning look at how the NYSE stock is doing. If it opens up, I will sell it, if it opens flat I'll sell it no matter what, because I have to put up a lot of capital.'"

"I think what people have to recognize is that there are a lot of common stock holders that don't want to be common stock holders after an expiration, particularly one where there was a big lift right at the bell," Cramer said. "So these people are then going to jettison their common, which is why you have a hangover.

"For a while with the private-equity guys and the possibility of takeovers, it was very dangerous to go into the weekend short," he continued. "Then suddenly you lost all that, so it became a free fire zone to be short, and I saw a lot of people, now that the short uptick rule is gone, just banging stocks down." This, Cramer said, was "quite effective" and caused a lot of fear on Fridays. "People started selling Thursday because they were worried about Friday."

But then the Federal Reserve blinked on Friday and thus created a situation in which market players don't necessarily want to be short on Fridays because of the thought that the Fed might take action on Monday. "I think that's changed the equation," Cramer said. "I don't think the shorts have any edge or the longs have any edge."

However, as Sept. 15 approaches, the longs will soon have an edge as the market will continue to see a push on Fridays as opposed to a sharp decline. "It won't be like the old days with private equity, where you have a ramp every Friday, but I do believe it's made it so that there is more of a balance on Fridays," he said.
At the time of publication, Cramer was long NYSE Euronext and Sears Holdings.

Jim Cramer is a director and co-founder of TheStreet.com. He contributes daily market commentary for TheStreet.com's sites and serves as an adviser to the company's CEO. Outside contributing columnists for TheStreet.com and RealMoney.com, including Cramer, may, from time to time, write about stocks in which they have a position. In such cases, appropriate disclosure is made. To see his personal portfolio and find out what trades Cramer will make before he makes them, sign up for Action Alerts PLUS. Watch Cramer on "Mad Money" weeknights on CNBC. Click here to order Cramer's latest book, "Mad Money: Watch TV, Get Rich," click here to order his book, "Real Money: Sane Investing in an Insane World," click here to get his second book, "You Got Screwed!" and click here to order Cramer's autobiography, "Confessions of a Street Addict." While he cannot provide personalized investment advice or recommendations, he invites you to send comments on his column by clicking here.

TheStreet.com has a revenue-sharing relationship with Traders' Library under which it receives a portion of the revenue from Traders' Library purchases by customers directed there from TheStreet.com.