Link list of semi-regular link lists
Finance/Econ:
Matt Levine's Money Stuff - daily links to finance.
Andrew Walker's YAVB "Some Things and Ideas" - monthly finance links.
FT Alphaville's Further Reading - daily. Broad range
Climateer Investing Not really a "round up" post as much as a constant stream of interesting links each week
Collaborative Fund's What we're reading - weekly round up
Asian Century Stocks - Monday morning links
Liberty's Highlights - Daily links with commentary. Finance-y
Best of Econtwitter - weekly round up of Econtwitter although arguably you’d be better of just following Alexander Berger
Tyler Cowen's Marginal Revolution, Daily Assorted links. Broad.
Prediction-y
Long Vol Short Prediction Markets - Things I've Enjoyed. Weekly links - mostly financy
Nuno Sempere's Forecasting Newsletter - monthly prediction market / forecasting links
Other:
Alexey Guzey's Best of Twitter - weekly twitter round up
Eukaryote Writes a Blog Internet Harvest. Infrequent
Tanner Greer's Notes from all over
Volokh Conspiracy's Short Circuit - weekly round up of court of appeals cases.
Erik Gahner Larsen's "25 Interesting Facts" and "Potpourri: Statistics". Statistics, semi-regular
u/gwern's Monthly newsletter
Avraham Eisenberg's Monthly links
Harsimony's Links
Nintil Links
Sam Atis Stuff I found interesting
Helen Lewis The Bluestocking weekly web roundup
r/TheMotte Quality Contributions Report Links to top posts from r/TheMotte