Last season, there were 30 trades reported on deadline day, 9 the day before, 3 two days before, 1 three days before, 3 five days before, and one each 6 and 7 days before the deadline. There were only three other trades in the month leading up to the deadline and they were all minor deals.
So while it does feel like there's not a lot of movement, the fact that Horvat, Tarasenko, and O'Reilly all got dealt 2+ weeks out from the deadline is a deviation from last year.
Seems like there is a standstill w/r/t Gavrikov -> Jarmo is waiting on Boston, who might need someone to take a contract off their books OR they may be trying to get Chychrun instead. Jarmo could be trying to shop around for a better deal but it's also possible no other team is willing to pony up. There are not many other D even on the market -> Klingberg, Schenn, Dumba possibly, McCabe (but comes with term), Gostisbehere, Edmunson, Kulikov. Erik Karlsson reportedly available as well, but that math gets tricky with his contract.
This holding pattern has to break eventually. There just aren't a ton of top 4 Dmen available at this deadline.