One of Wall Street’s favorite terms is the word “bubble.” What formerly described irrational exuberance for asset classes and insane valuations, now gets chucked out at the first sign of rising prices. Most bubble talk is junk, but it can happen. Former PIMCO executive Mohamed El-Erian has a nice piece on BloombergView about how macro-prudential regulation caused bubbles.

Pension Partners (Charlie Bilello): After finally tearing down the “wall of worry,” it might be time to start to worry about … the wall of worry.

Bespoke Investments (Staff): Despite having another six months to go, we’re already reaching year-end price targets for the S&P 500.

Money & Banking (Kermit L. Schoenholtz & Stephen G. Cecchetti): So exactly how do we know whether assets rising above historical measures are bubbles?

The Guardian (Nils Pratley): No bubble here: check out the $18 billion valuation on taxi service Uber.

Market Watch (Anna Prior): Nor here. Demand for extreme sports cameras are expected to fuel a $2.3 billion IPO for GoPro.

The New York Times’ DealBook (Peter Eavis & Neil Gough): Concern continues to be raised about potential fraud in Chinese commodities.

AlphaBaskets (Roger Nusbaum): But you know what? All of this pessimism is actually good for your financial planning in one way. It should get you to save more in your financial planning.

BBC (Staff): And on a happier note, we’re all richer! Last year, the world saw a 14% jump in private wealth.

New Scientist (Peter Aldhous): And there’s hope on the world’s AID/HIV epidemic. We have the chance to get rid of it with gene editing.