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Trading Platforms · Tool Face-Off

Fidelity Active Trader Pro vs TD Ameritrade thinkorswim

Quick answer

Both are elite free desktop trading platforms, but thinkorswim edges ahead for active traders with its deeper charting, paper trading, and scripting power. Fidelity ATP wins on research quality and is friendlier for the semi-active investor who also wants great fundamentals data.

Fidelity Active Trader Pro
Rock-solid research meets capable trading tools
4.1★
VS
Our pick
TD Ameritrade thinkorswim
The trader's trading platform — deep, powerful, and a little intense
4.3★
Platform Cost
Free
Free
Stock & ETF Commissions
$0/trade
$0/trade
Options Commissions
$0.65/contract
$0.65/contract
Paper / Simulated Trading
No
Yes — full paper trading environment
Charting Studies / Indicators
~40 built-in studies
400+ studies + custom scripting (thinkScript)
Custom Scripting / Automation
None
thinkScript (proprietary language)
Options Analysis Tools
Basic options chain, P&L graph
Advanced: Greeks, risk analysis, strategy roller
Third-Party Research
20+ providers incl. Morningstar, Argus, S&P
Fewer providers; more platform-native tools
Futures Trading
No
Yes — full futures & futures options
Forex Trading
No
Yes — 70+ currency pairs
Real-Time Streaming Quotes
Yes (Level II available)
Yes (Level II + full depth of market)
Mobile App Parity
Good — Fidelity app is polished
Excellent — thinkorswim mobile mirrors desktop closely

Fidelity Active Trader Pro

Ease of Use★★★★½
Customization★★★½☆
Options Tools★★★½☆
Order Types & Execution★★★★☆
Research & Fundamentals★★★★★
Stability & Performance★★★★½
Charting & Technical Analysis★★★½☆

TD Ameritrade thinkorswim

Ease of Use★★★☆☆
Customization★★★★★
Options Tools★★★★★
Order Types & Execution★★★★½
Research & Fundamentals★★★½☆
Stability & Performance★★★★☆
Charting & Technical Analysis★★★★★

Worth knowing

thinkorswim once had a feature called 'thinkLog' that let traders journal their trades — because apparently staring at charts all day wasn't enough self-reflection.

If you want

You want the most powerful charting and options analysis available for free

thinkorswim's 400+ indicators, thinkScript, and professional-grade options tools are unmatched at zero cost.

→ Pick TD Ameritrade thinkorswim
If you want

You want deep fundamental research alongside decent trading tools

Fidelity ATP bundles 20+ research providers and stellar screeners — hard to beat for stock-pickers who also trade.

→ Pick Fidelity Active Trader Pro
If you want

You're learning to trade and want to practice without real money

thinkorswim's paper trading mode is a full, realistic simulation — ATP offers nothing comparable.

→ Pick TD Ameritrade thinkorswim
If you want

You trade futures or forex alongside equities

thinkorswim supports futures, futures options, and 70+ forex pairs; Fidelity ATP doesn't offer either.

→ Pick TD Ameritrade thinkorswim
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