There were two rigged tickers today:

$LGVN, rotating the float (2.68MM) nearly 48 times on 368,000 trades

(December 01, 2021 03:17 ET - Update surprise: Longeveron Inc. Announces Pricing of a $20.5 Million Private Placement)

$ISPC, rotating the float (3.2MM) nearly 31 times on 327,000 trades.

(Mon, November 29, 2021, 12:03 AM - Update surprise: iSpecimen Inc. Announces $21 Million Private Placement)

Use the YouTube playback controls (gear icon on bottom right) to speed up or slow down the chart playback. Make it full screen and view in 1080p HD to see things clearly.