Listly by Zack Miller
Fintech is sexy again and here are some of the best investors (angels, Venture Capitalists, private equity) in the space.
Source: http://www.tradestreaming.com/2012/05/22/who-are-the-best-investors-in-fintech-startups/
Portfolio companies: StockTwits, etoro, BillGuard, DailyWorth, YCharts, wallstrip, myTRADE
Portfolio companies: Covestor, Dwolla, foursquare, fundingcircle, lending club,
Portfolio companies: Mint.com, CreditKarma, Simple, Fee Fighters, PeerTransfer, Caplinked, DailyWorth
Portfolio companies: Kinetic Global Markets, Metamarkets, Recorded Future, Simple, The Trade Desk, StockTwits, MyTrade, Wallstrip
Portfolio companies: BusinessInsider, Kroll BondRatings, Recyclebank, Tippr, PayFone
this post on Quora has some great info and lists some of the top VCs in the fintech space