Since SuperNET holds 7.245% of NXTventure, does SuperNET now also possess some Atomic shares?
indirectly it does
theoretically the increase in value of the Atomic should ripple through and increase the value of SuperNET.
There are price discrepancies as the assets are not arbitraged in realtime like other markets (yet), so this makes for ways that people can make some trading profits. once all the price discrepancies are smoothed out, then I expect any value increase of a SuperNET indirect holding will boost the valuation.
This effect is clearest with JLH. I keep adding new assets to it, without it paying anything, so this makes is NAV go up. However it is traded in multiple markets and its price is usually lagging the NAV for a while, until the market realizes that it is underpriced. so there is a time lag and for each level of indirection I would assume another lag.
as fast as crypto is, the price movements are actually still quite slow and possible to trade manually
James
Is it a bad idea that supertraders do this arbitrage?
I mean if the price of unity is under the NAV they can buy some unity and lead the NAV at a higher price because they would use less bitcoin to buy than bitcoin equivalent of unity (true value of the fund) that it represents.
If it is not clear imagine for exemple there is some panic sell from some assetholder :
-Supertraders have a buy order at 95% of the NAV (the value should be always calculated in all the coins of supernet)
-Supertraders buy it with BTC / NXT/ BBR or other coin (maybe the margin should be bigger for coins with less volume trading)
-So the total fund of supernet has decreased but the NAV is higher making all assetholder remaining more rich.
-After it could happen a panic buy so supertraders can sell unity at 105% of NAV.
ps: The value of 95%/105% is just to have an idea of the margin in order to make the exemple more clear but it should be calculated.
hordes of trolls trying to bring him down. 
