The S&P opened at about 3618 yesterday (after closing Friday at a little under that), and closed at 3677. Today it opened at 3749, and remains at that level or a little higher.
Tesla closed Friday at 265, opened Monday at 243, closed Monday at 242, and opened at 252 today, before falling back to the low 240s.
All while you posted friday close for TSLA and compared it to monday open, but didn't do the friday close for SPY. If you are looking just at monday-open to monday-close (which is what you did for SPY), TSLA moved from 243 to 242. As of today, TSLA is over $246.
> The S&P opened at about 3618 yesterday (after closing Friday at a little under that)
I didn't think it was worth mentioning the numbers, because the change wasn't hugely significant for the S&P, but Friday close was 3589, Monday open was 3616; that is a rise of 0.7%.
That's a rather roundabout way of saying "the entire market was very significantly down yesterday". S&P500 was down, tech companies were down, almost everything was. You could write that story about any company using the premise, just swap the company ticker and the event at the end of the sentence.