(Market cap article updated with Monday morning stock movements and additional analysis of TheStreet's market-cap poll.)NEW YORK ( TheStreet) -- Apple ( AAPL) came into the week beginning last Monday, March 15, having accomplished a neat feat: the consumer technology giant passed retail giant Wal-Mart ( WMT) and Warren Buffett's Berkshire Hathaway ( BRK.B) for third place among U.S market cap leaders. There is still a wide gap between Wal-Mart and Exxon Mobil ( XOM) and Microsoft ( MSFT). Regardless, the most notable market-cap change of fortune in the past week was the bite into Apple's short-lived market-cap paradise. The previous week's rally in Apple shares was banished, and Apple's market share was back down to $201.6 billion, dropping below both Berkshire Hathaway and Wal-Mart. It was a tough week for Apple, which shed $3.28 from its share price over the course of the five trading days, down to $222.10 at the Friday close. Technology investors were also more hesitant to trade this past week, with Apple's five-day trading total approximately 20 million shares lower than the previous week. Apple began the new week down by $1.44 in Monday's pre-market session to $220.81. From a technology sector perspective, the week could have ended worse for Apple. After all, Palm ( PALM) was down close to 30% on Friday with more than 125 million shares traded on Friday alone, after a big earnings disappointment. Palm shares were down another 6% on Monday morning to $3.76 and Palm was among the most active stocks in early trading. Apple may still have the technology sector in the palm of its hands -- and remains near a 52-week high even after this past week's slump -- however, Steve Jobs could not keep pace with Warren Buffett or the Walton family. Berkshire's market cap at the close on Friday was $203 billion, barely changed from the week's beginning, and it seems that the slow-and-steady mantra of Warren Buffett has definitely been reflected in recent trading. Berkshire shares ended the week at $82.06, after opening trading on Monday at $82.17. Here's a Berkshire Hathaway factoid for you chart-traders out there: Berkshire Hathaway shares have closed between $82 and $83 for the past 13 consecutive trading session. Berkshire was down early on Monday morning, to $82.06. Still, at a less than 1% loss -- and given its recent trading profile -- maybe not a significant indication of the week to come on Buffett trading. Wal-Mart, which momentarily lost its edge, was back in fine form to start the week, with a buy rating from Goldman Sachs ( GS) on Monday. It was the only of the three market-cap biggies to make a significant gain over the five trading days, even though it had a losing day on Friday.