Reports & Filings
SEC.gov | EDGAR | Company Filings - Official SEC filing search
https://sec.report/ - Alternative filing search
http://www.whalewisdom.com/ - Filing tracker and market data aggregator
Sentiment Tracking
https://bigbrainbaby.herokuapp.com/sentiment - Sentiment tracker made by our very own @! Kryptek
http://www.swaggystocks.com/ - Reddit stock sentiment tracker with various useful tools
https://dayminer.herokuapp.com/ - Sentiment tracker
Twitch - Sentiment tracking stream
http://www.stocktwits.com/ - “Alternative” stock twitter, sometimes useful for DD.
http://www.twitter.com/ - Twitter search can be immensely useful for sentiment tracking
Scanners & TA
http://www.finviz.com/ - Incredibly full featured stock scanning tool
https://marketchameleon.com/Reports/PremarketTrading - Pre-market scanner
Premarket Screener - MarketWatch - Pre-market scanner
Pre-market Movers - Investing.com - Pre-market scanner
Options
http://www.optionstrat.com/ - Profit calculator, strategy tool & options data
http://www.optionsprofitcalculator.com/ - Profit calculator & strategy tool (useful for larger price moves than optionstrat supports)
Market Data
http://www.ortex.com/ - Up-to-date market data including company financials, outstanding share counts, short interest estimates and more. Subscription Required
http://www.shortsqueeze.com/ - Only other site I’ve found that lists FINRA report short interest properly for free. Not updated as frequently as Ortex.
IBorrowDesk - Information regarding the availability of shares to borrow
https://www.barchart.com/stocks/quotes/ - Historical data for options and stocks
Suggested Brokers
http://www.tdameritrade.com/ - ThinkOrSwim is one of the best trading platforms in existence and TD is one of the best brokers as well.
http://www.fidelity.com/ - Fidelity is commonly used as well. Their desktop platform is worse than ThinkOrSwim, but as a broker they are on par with TD.
http://www.webull.com/ - I generally don’t suggest using an “app” based broker for anything besides a backup, however, if you’re in that market, I suggest Webull as their platform is A LOT more fully featured than the other apps.