$Atossa Therapeutics (ATOS.US)$ looks like pushing the price...

Roukou : Price action today a strong indicator of shorting via calls close to strike price even with SSR on. Strong support at $5 though, and with July 16 OPEX (options expiry) coming up, an uptrend can be expected soon. It also depends on whether whales decide to join in on the buying as well to take advantage of the July OPEX.

Still up 400 - 500% YTD anyway, shrug. A pump and dump on the other hand would not show the same chart you are seeing on ATOS though, but rather low volume most days followed by one huge green candle one day then a huge red candle afterwards.