All is revealed in the trading volume during the 10-min drop before the Close. Follow along with the numbers:
If an avg percentage of shorting happened during the rest of the day, a dump of 2.8 M shares sold short in 10 min from 3:49 - 3:58 pm fully explains the price action.
- today's FINRA-reported (srch "TSLA") 14.96M shorted on 24.58M traded shares (60.9% short)
- On average, FINRA short volume is 49.5% of total volume, +/- 9.6% (1 Std Dev)
- FINRA short vol today was 2.8M shares above the mean
- 2.78M extra shares traded during the drop (3:49 - 3:58 pm)
Paging @Cherry Wine Can you provide any Level II data for a glimpse into the order book at that time? How many shares needed to be dumped at 3:49 pm in order to burn through the Order Book?
Note: FINRA largely reports on trading activity of its retail broker members, so today's market action can largely be attributed to their activities. Today's Non-FINRA (MMs and some large Investment Banks) volume was 57.98% (-0.54 Std Dev below mean of 60.32%) which is quite a bit below their normal trading activity. Today was largely about retain Brokerages.
Cheers!
I don't have historical order book data, but I did happen to snap a shot of it right around 12:35ish when the stock was trading at $960. See the post below. Have to eyeball it, but maybe somewhere around 130k-140k?