Bill Harts

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Bill Harts

Bill Harts

@AlgoTrdr

Views expressed are my own.

New York/Delray Beach Katılım Ekim 2007
1.4K Takip Edilen2.3K Takipçiler
Modern Markets
Modern Markets@ModernMarkets·
It's a wrap! MMI thanks readers of our studies, reports, and op-eds, since our founding in 2013 – and supporters dedicated to advancing the greatest markets ever. With our success and the greatly improved understanding of HFT, our work has come to a close. Wishing you the best!
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Larry Tabb
Larry Tabb@ltabb·
Just heard they are winding down @ModernMarkets Like I told @KirstenWegner its wind down has been its success. When Kirsten started and @AlgoTrdr founded the group, HFT was a 4 letter word. Now today, electronic trading is just trading.
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Bill Harts
Bill Harts@AlgoTrdr·
@TylerGellasch @WSJ Just curious, what is that off-white substance with letters and pictures on it?
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Tyler Gellasch
Tyler Gellasch@TylerGellasch·
Investing in China is getting more complicated and riskier by the day. This is B10-11 of my print edition of the @WSJ. Three very long articles all focus on different issues.
Tyler Gellasch tweet media
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Bill Harts
Bill Harts@AlgoTrdr·
@alexferrara “I thought, ‘I’ll have trouble with you only on clay and maybe on hard court, but not on grass,’ but now…it’s a different story.”
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Alex Ferrara
Alex Ferrara@alexferrara·
Feel Djokovic’s frustration. Like, what more can he do? Alcaraz pulling off some amazing returns.
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Bill Harts
Bill Harts@AlgoTrdr·
@TripleDTrader Be careful not to conflate trades done at the close (which must be reported at or shortly after the close) with trades that use the closing price as a reference (which are reported immediately when they are made, even if at 4:30, 5:00, 6:00, etc. )
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Dennis Dick, CFA
Dennis Dick, CFA@TripleDTrader·
Both. Some executions hit the TRF instantaneously (those from retail market makers) where other larger transactions (example those executed on the close) could be reported with a slight delay. We need more transparency in the FINRA tape!
Eric M@Manhizzle

@TripleDTrader Great convo! does dark pool activity get reported on TRF right away, or is there a delay in the reporting (hitting the tape after hours, for example)?… does it cause inefficiency in markets because it hits the tape late, or hits the tape as TRF - basically “unknown”?

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Bill Harts
Bill Harts@AlgoTrdr·
Last call for CS II. End of an era! Does anyone remember what it was used for/what problem it solved? @JSelway3 #110000616054" target="_blank" rel="nofollow noopener">nyse.com/trader-update/…
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W. Brennan Carley
W. Brennan Carley@Fintech_Brennan·
Great explanation. For anyone who harbors conspiracy theories of naked shorting, or who wonders why securities don’t settle instantly, I highly recommend “after the trade is made”: amazon.com/After-Trade-Ma…
TraderZero@_TraderZero_

The primary reasons people get worked up about naked short selling is that they don’t understand it. In fact, if you read the huge sampling of posts, they don't understand enough about the basics of stock trading and short selling to understand what naked shorting really is. I have debunked the theory a number of times just from the perspective of market mechanics and money flow and the Sabby complaint demonstrates why a long term open naked short can't exist perfectly, But it dawned on me that I don't think I mentioned how stocks are held will not allow for a long term unsettled transaction and this fact once again kills the theory. First off, you have never owned any actual "stock." When you buy a stock, what you actually acquire is a legal right called a “securities entitlement.” It isn’t the stock itself—it’s a legal claim against your broker. Your broker doesn't actually own stock, either Your broker also just has a legal claim, another securities entitlement. Its claim is against the DTC and the DTCC/NSCC arms are the sole bodies that keeping track of stock sales and purchases. The overwhelming majority of stocks listed on major U.S. exchanges are held in custody accounts at DTC and exist only as marks in a computer ledger. The stock you "own" is actually owned by the DTC. So what you own is a derivative claim against other participants in the DTC and your broker deals with the NSCC to transfer the money and claims as needed. The last piece of this is that your brokers trades are netted. Meaning after each session, the NSCC nets trades against each other from all brokers and market makers. Let's say Fidelity customers buy 1000 shares of $FNGR and TDA customers sell 900, the NSCC tells the DTC to put Fidelity down for 100 shares. (Google “continuous net settlement” or “CNS.”) So when it comes time for NSCC to settle the netted positions on the third (soon to be one) day after the trade, TDA's stock account at DTC is debited and a credit is issued to Fidelity's stock account at DTC. no physical shares actually are exchanged. And the DTC only keeps track of the net trading of its members—the brokers, rather than individual investors. I could go deep in the weeds here but in basic terms, there is no way that millions or billions of shares exist, there is no possible way to counterfeit shares, the DTC owns the computer, the shares and all of the trades are netted so it would flag instantaneously if there were some sort of large number of unsettled shares floating around. Again, simply not possible to do what they think is being done. The longer this goes on and the more these guys post on this topic, credibility is just drained. It is really hard to show any shred of respect for these people. There will be a day of reckoning, and the excuses can't be the system is against us or the usual bullshit. These fucks just need to admit they were duped or whatever and learn from the mistakes, or simply delete their accounts. If they don't and you do get it, be relentless. Run these fuckers out. They are doing more damage to the reputation of retail traders than anyone in the market. We will never get the respect we deserve with these fucking idiots making noise. It's embarrassing and the HFs, MMs and regulatory bodies are just laughing at retail with this ridiculous bullshit.

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Moved to Bluesky 🇮🇱
Moved to Bluesky 🇮🇱@joelP826·
@AlgoTrdr Harry Markowitz was a professor of mine in business school (Baruch College [now Zicklin School of Business] in the 1980s.) He was without doubt the most brilliant person I have ever met.
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Bill Harts
Bill Harts@AlgoTrdr·
Without Markowitz' work our industry would look very different today. Diversification and even indexing would likely be considered fringe ideas. Huge fund complexes and managers that use those strategies might not even exist. Even now his 1952 "Portfolio Selection" is a must-read
Kevin A. Bryan@Afinetheorem

Lovely obit of Harry Markowitz, who developed modern portfolio theory in his '52 article: to maximize returns under risk aversion, buy negatively correlated assets in a particular way. An idea so novel & useful it's hard to see what people did prior to it! nytimes.com/2023/06/25/obi…

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Bill Harts
Bill Harts@AlgoTrdr·
@jgreco Oh and then they had the gall to charge $0.05 for the bag!
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Bill Harts
Bill Harts@AlgoTrdr·
@jgreco Prices for everything in the Hamptons are even more nuts than usual this year. Bought an apple pie at the new “hot” bakery Carissa’s in Sag Harbor yesterday: $48.00. (Not a typo!) If I didn’t need it for a party gift at that moment I would have walked out.
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Bill Harts retweetledi
Andrew Harts
Andrew Harts@AndrewHarts·
This is just a taste of @JakeBrownRadio ranting from tomorrow's episode of the @AmazinButTrue podcast. You're gonna wanna give a watch/listen to this one. It drops at 5am on every major podcast platform.
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Bill Harts
Bill Harts@AlgoTrdr·
To all my Twitter friends, I've accepted the role of CEO of the Long Term Stock Exchange. I couldn't be more excited to be part of a marketplace with different values, supporting and highlighting our nation's great sustainable companies. ltse.com
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Jeff Alexander
Jeff Alexander@see_jeff_tweet·
@AlgoTrdr I’m the only one tagged? Am I all alone being a Python guy? Do we go on a Panda hunt after we are done with the Python one?
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Larry Tabb
Larry Tabb@ltabb·
@AlgoTrdr @see_jeff_tweet Bill - I thought you were talking about python the language and the picture was eye candy. But no - this is about hunting pythons - the snake. lol
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