You can see, at a glance (monthly charts below of FOXA, CMCSA and TWX), which media giants are leading or lagging each other overall…they are all at or below their respective major resistance levels.

The only one whose momentum indicator is above zero on this long-term timeframe is FOXA…if it plunges and falls below zero, no doubt the others will weaken further.

On the flip side, if FOXA breaks and holds above its prior swing high of 39.27, the others may gather strength, as well.