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buffett said he thinks the stock would go up if he dies. get out the actuary tables

Wrote a parimutuel system. Thought it would be cool at gatherings import numpy as np from fractions import Fraction import pandas as pd from odo import odo def dec2percent (dec): """dec2percent(2) """ return np.reciprocal(float(dec)) def fractional2percent (fractional)...

In otc markets they'll provide wider and smaller size quotes. It was builtin to a lot of bank fx streaming systems a while ago

According to CBS article charges seem trivial and a lot of leeway in interpretation. Seems like every business is guilty. Miami bound :D

what do you think are the Nth order effects of this? any betting markets giving odds?

you can wrap your data/orders in tachyons to get faster info and act before the present

you might be seeing partial fills. no idea what a wall of 100 share orders is. what makes you think a single instrument holds much info? don't you think instruments behave together?

physically staring at charts and numbers flying by will get you no where

probably easier to look at (subscribe to) orders and transactions. Then derive whatever you want from that.

Ok, maybe gamma was an unclear choice. But the etf needs to buy on up days and sell on down days to rebalance NAVs with the reference index. I thought using delta and gamma terminology made things easier, apparently not

I wasn't referring to holders of the etf. I was referring to the etf itself and its need to rebalance

In options when you're short gamma and underlying goes up you need to buy to rebalance your position. That's what I was getting at. Leveraged etfs need to buy on up days and sell on down days to rebalance

If you think of the leverage factor as delta then if reference index goes up 1% a 2X etf needs to go up 2% which is where the rebalance comes in. So on huge up/ down days levered etfs exacerbate the move

What does the spec say? Usually levered etfs should multiply what the reference etf did on the day. They are basically short gamma and were front run at end of day years ago, maybe still are. Shorting both leveraged and inverse leveraged probably a good trade depending on costs

Get lucky. End up in a city with a niche industry at the beginning of technological upheaval.

Retail doesn't do what institutions do. Retail doesn't even do what institutions did 30 or 40+ years ago.

There's only one definition of inflation. The devaluation of money. Everything else is a consequence of that

Assume the servers are the best available. I remember highly customized kernels, openonload bypass, fpga, microwave networks, a lot of internalized orders, unimaginable fees. Taking advantage of how networks and routers work over tcp and udp

Not even comparable. Two completely different worlds.

Half life for the $ is about 5 years. Kind of amazing.