Mutualism can take on many forms: Symbiosis: in which both organisms live together in closely proximity, and in which both generally derive benefit. The relationship is obligate, meaning at least one of the species must be involved in the relationship to survive.
Lowest Option Commission. Lightspeed Trading offers low commissions on options, allowing both occasional and frequent traders to take advantage of competitively-priced options. While the standard fee is an already low $0.60 per contract, active traders who trade more than 500 contracts per month will qualify for even lower rates. Those who trade in excess of 100,000 contracts per month will pay merely $0.20 per contract.
Tradeking â Cheapest Trades. is an online discount brokerage firm with some of the least expensive trade fees available. $4.95 for stock and ETF trades is crazy talk. Plus no-load mutual funds are reasonable at $9.95 per trade.