im def a noob here, and to cryptocurrency altogether....so forgive me if I'm a bit daft but.... Look at the coin market on cryptocompare. There is literally a wall of red for percentages. The top 20 coins are all in red. Why would anyone be surprised that sigt is also in a declined value? I would expect such, seeing as virtually half the crypto is in decline today.
The decline in price is normal but the decline in Volume is not
Price can fluctuate easily but if the Volume decrease it means there are fewer Buy and Sell Transactions. Very low transactions per day and the coin will suffer slow Death
Lessening volume in any market is a sign of consolidation reaching its latter stages. Trading slows down to a slow trickle. This does NOT necessarily mean anything bad. In fact, in stocks, it often means sellers are content to hold while buyers have not yet seen anything to spur them into action.
Once this period of stasis has been reached, a small increase in buying can serve as a catalyst to spark a rally.
The lack of volume after a definite move in one direction (in this case, a down leg after the big spike in price) often means a pending reversal. Chart readers know this and have for centuries. Often, double and triple bottoms form and on the last dip the volume dries up considerably before it turns back up.