From National Review:

Bloomberg has, in a just a few months of running for presidency, spent around $200 million in the primary — approximately $194 million more than the NRA spends on an average year in lobbying Congress and approximately $170 million more than the NRA spent on the entire 2016 election.
The $11 million Bloomberg reportedly spent on his Super Bowl is $11 million more than the notorious “gun lobby” has spent on national television advertising, probably over the past decade, if not forever.
That doesn’t even account for the numerous political entities Bloomberg funds, such as “Everytown for Gun Safety,” the gun-control group he co-founded, which announced recently that it is going to spend $60 million on the 2020 elections — or more than the NRA has ever spent in any election cycle ever.