![Tradeweb's Lee Olesky](https://s.wsj.net/public/resources/images/FN-AH713_fn_tra_M_20190718103125.jpg)
Wall Street’s investment banks fizzled in the second quarter. But it would have been worse had it not been for one big deal: the initial public offering of Tradeweb, the bond trading platform.
Tradeweb went public in April via a $1.1bn deal that allowed many of its big-bank backers to generate hundreds of millions of dollars by offloading holdings in the business.