The highest volumes today go to: Shaw Communications Inc., Roblox Corporation, Tremor International Ltd.

What is happening with the market now? The leading indices are slipping — Nasdaq drawing back 0.34% to 12,083. S&P 500 slipping 0.24% and closing at 4,127.66.

Why Trading Volume Matters

Trading volume is simply the total number of shares traded including both buy and sell orders. If a stock has appreciated on high volume, it is more likely to be a sustained move compared to an appreciation with low volume. Typically, high volume trading sessions are considered significant occurrences and closely watched by traders.

Though trading was down Friday, some communication_services stocks are currently at high volumes. Here is an update.

Shaw Communications | trading volume soars by 473%

Shaw Communications Inc. is having an eventful day so far, currently at 6.35 million and outpacing its average daily volume by 473%.

Having set a significant low of $24 6 months ago, the Canadian telecoms provider is trading 24.68% higher. The stock has been trending positively for about a month. Shaw Communications has posted further gains as part of a 17 day trend that has already seen the stock gain $1.58.

Shaw Communications discloses 7.2 cents per share dividend to be paid on Thursday, March 30th

Roblox | beating its average daily volume by 293%

The innovative game platform has gained 64.09% since its lowest print of $23.19 earlier this year. The stock has been trending positively for about a month. Roblox has a market cap of $24.50 billion with an average daily volume of 9.13 million shares.

Roblox is having an eventful day so far, currently at 26.75 million and outpacing its average daily volume by 293%.

Tremor International | 153% improvement so far today

Tremor International is having an eventful day so far, currently at 131,213 and outpacing its average daily volume by 153%.

The video-first advertising technology platform is up 12.92% from the significant low of $5.11 it hit 20 days ago. Tremor International has posted further gains as part of a 13 day trend that has already seen the stock gain 66 cents.

— Average trading volume refers to a 21-day rolling average.