StockTiger
Stock market Technical trader - publisher stock market website, comprehensive weekly newsletter - daily video of break out or break down stocks. Site has live chat room with experienced traders. Twitter - http://twitter.com/stocktiger

HFTAlert
Unique non price-based trading and market analytical tools. HFT and algorithmic detection monitoring, trend prediction and tape reading software.

ukarlewitz
Wharton. McKinsey. UBS. Securities industry since 1994. Asia ex-pat during 1980s-90s. Blocked by Zero Hedge since 2010.

Fibline
K.I.S.S.

abnormalreturns
Tadas Viskanta, Founder and Editor of Abnormal Returns. Author of Abnormal Returns: Winning Strategies from the Frontlines of the Investment Blogosphere.

OptionsHawk
Active Options Trader - OptionsHawk.com Founder

PsychTrader
I use a combination of cognitive psychology, psychometrics & brain training to help traders achieve their potential in the markets. Author. Premium seller in the indices (SPX, NDX, RUT).

WScottONeil
President of MarketSmith & portfolio manager at the O’Neil companies. This account reflects personal opinion & should never be considered investment advice.

tradingpoints
Quantitative Analysis of the Markets

gtotoy
DayTraderBootCamp.Com

SwatOptions
SwatOptions.com is the First Options Trading Network that connects Options Traders, friends and others to share their Options Trading ideas and analysis

chicagosean
Director of Investor Relations Enterprise Solutions at StockTwits. 15-year trader, former Member Chicago Board of Trade.

harmongreg
Premium Service and free blog at Dragonflycap.com, Professional Stock and Option trader, long time finance guy - Stock loan, repo, swaps, options as well

StockTwits
Welcome to StockTwits, Home of the Human Ticker, Real Time Pulse of Markets & Indispensable Sentiment Machine. Use StockTwits To Catch Up Fast or Dive Deep into open analysis and debate.

RatioTrader
Trader and Founder of RatioTrading.com

HCPG
Active traders with focus on commodities and tech; founded HCPG newsletter in 2006

StocktwitsHater

CoderTrader

RMBrenna
Experienced derivatives professional on the Chicago trading floors.

GrandSupercycle
Feb 2013: Apart from AAPL for 2 days - my posts never appear in the TOP category. Is it because of my bearish Wile E Coyote warnings ? When will StockTwits give me an explanation ? Seems 500 followers means nothing & they want me to leave ...