Palantir closed Thursday at $179.01, up $7.97 or 4.66%. The close understates how the session opened and overstates what it settled into. The stock printed as high as $185.76 and was running 9.1% higher by 10:10 in the morning, then spent the balance of the day returning the gain. It eased again after the bell to $177.80. Volume came in at 22.23 million shares against a ten-day average near 30.8 million, so the bid that produced the best price of the week was thinner than an ordinary day’s trade.