Jeffrey Donovan

@Kibler11 @HFTAlert Yes

Comment from a user about the new features in our @HFTAlert software. "I am up more than $20k on three trades!!! This thing is a bloody ATM machine......"

@Kibler11 Number of hft-algo-driven buy programs vs. sell programs. It's nerdy to me (I wrote it so yes I am a nerd), but highly useful to the people who use the @HFTAlert platform.

Unprecedented level of programs showing up on @HFTAlert's Burst Monitor today. Over 600 in just over an hour of trading.

@MarketSource_ES @HFTAlert Not since we've been running it. Very good chance we could see that today!

@BadAlgo @HFTAlert at 1106 now, has there ever seen a 2000 program day?

Some interesting premarket quoting in SDD today -

@lucyt95986191 @HFTAlert Pre-market there isn't much usefulness except the fascinating charts. Algo's will usually run tests during the time. In regular hours seeing huge bursts in quote rates for a single issue can alert you to an interest, though the NBBO is rarely taken along for the ride like this...

Pre-market BIB Bots.....we used to call these "zappers".....

@HFTAlert users are loving this app!

Pre-market algo testing - nice price range:

Mountainscapes ...... based on bid/ask sizes.....

Algos create some of the loveliest patterns.....

@MedicalQuack Hi MQ! Never stopped writing software, quite the opposite. Not with Nanex anymore but with @HFTAlert, taking their software to new levels.

@BadAlgo Did you start writing software again? Are you still doing work for Nanex? Just noticed some tweets from you again, been a while:)

@lizNNP I used to agree with that sentiment, but the fact is markets are more liquid today because of it and it's far easier for home investors to execute their trade at the NBBO than ever before. My work & research now focuses on giving average investors the tools to capitalize on it!

101 quotes in 2 milliseconds.

@kurzellaa @HFTAlert Bonds and Futures have a completely different market structure. Our systems focus on US Equities.

@kurzellaa @HFTAlert No, it tracks every US Equity, ETF, etc.

@kurzellaa The first thing to do would be subscribing to the Burst Monitor from @HFTAlert which will screen all of it (9000+ US stocks) and identify the individual issues. We may be making other items available in the future, such at the QTSequencer (what was used to generate those images).

AAPL had quite a second at 11:45:17 EST.....8,877 quotes - 1,994 trades in 1 second, 7 milliseconds.