The argument for deficits & debt raising interest rates in the US is not increased credit risk, it is that interest rates are a function of economic fundamentals, flows & policy. Deficits/debt change those.

I can't tell if I'm agreeing or disagreeing with @jc_econ.

1/x The market continues to try & shake out weak hands from overextended positioning by both HF & Retail...After a strong Vanna run up overnight, as expected, retail exuberance exploded on the open in the form of retail call buying, this fragility, paired w/a)Mean reverting flows

2/x from pinned Index Vol b) well documented, risk parity rebalancing flows & c) selling flows tied to bank EOY liquidity constraints. In combination, these flows have together have amounted to substantive selling pressures, strong enough to counteract the positive vanna/ charm

3/x flows, & point to continued likely index RVol an IVol pinning...Historically, the week of quarterly OpEx markets are notoriously volatile intraday, but also mean reverting like we saw today. I think it is fair to expect continued IVol compression & more of the same underlying

4/x chop. Vanna/Charm flows will lose their oomph after Wed 12/16 vixperation morning. There’s a window of weakness which I’ve spoken to for a month that falls 12/16-12/23. That could open a brief window that could lead to revaluation of the real risk & short interest,post 1/6...

5/x but the overwhelming 10k 🦍 of index Vol compression should still hold any correction in time & price in check in the shortterm and it’ll be hard to have anything blow up too bad in SPX land given how cheap & abundant Xmas Vol is 12/23-12/24. NTM, a stim deal & potential Fed

Occupational #wearables for monitoring low back load have potential to improve ergonomic assessments & enable personalized, continuous monitoring of overexertion injury risk in the workplace.
#biomechanics #ergonomics

Encouraged by what we

We wanted to know: if we can only use a small number of wearable sensors to monitor low back loading, then which sensors should we use, where should we place them, what type of algorithm should we employ, & how accurately can we monitor back loading during material handling?

2/

A few thoughts on tax policy. Thread:

So you are worth >$100M or perhaps even a few billion. There are only two ways to become this rich.

1. You start a business that becomes very successful.
2. You inherit wealth from your family. 1/

Whether you created a great company or inherited a lot of wealth, you are now sitting on a capital asset. You don’t really have any ordinary income (not meaningful to be relevant) and you never will. To the extent you ever pay taxes, it will be capital gains. 2/

The highest tax rate that the super rich will ever pay on their income (or wealth) is 20% capital gains tax. So, the super rich pay the equivalent effective tax rate of any American earning $75K (when you include FICA taxes). Same as a teacher or a cop. 3/

The question following from this obvious injustice in the tax system is the appropriate policy for taxing capital income. Economic policy would suggest that the best tax rate on capital is 0%. Why? ...4/

...Because in a capitalist society you want capital flowing efficiently without friction to its most productive use. Benefits of that are obvious. 5/

To see how the innovation economy has left much of the US behind, we traveled to the small town of Bryan, in northwestern Ohio's Williams County. This is a thread about how to fix what the innovation economy broke about America.

This is Valerie. She’s 46 and has worked all her life—three jobs currently—yet she has just $65 in her checking account. Her husband works full time at a metal fastener plant.

Altogether, after health insurance premiums but before taxes, Valerie and her husband make about $45,000 a year.

The story of her working life is also the story of Bryan. The town is broken in some of the same ways that much of the rest of the country is broken. Understanding what broke Bryan is crucial to understanding how it might be fixed.

For decades, America’s political and business leaders acted as if places like Bryan didn’t matter.