Head-to-head comparison across ratings, fees, asset coverage, and platform breadth.
Cobra Trading
4.0 / 5
For active day traders and short sellers with $27K+ in capital who need multi-source HTB locates, true DMA without PFOF, and a human picking up the phone. Not a fit for buy-and-hold, beginners, or anyone who wants a polished mobile app.
Last reviewed May 13, 2026Data may be outdated — verify rates before acting
Interactive Brokers
4.6 / 5
Best for active, global, and advanced traders. Lowest margin rates in the industry, broadest international access (160+ exchanges, 36 countries), and the most complete API stack in retail brokerage.
Last reviewed May 13, 2026Data may be outdated — verify rates before acting
Sub-rating overlap
Each broker scored 0–5 across the same 8 dimensions.
Detailed comparison
Green cells mark the winner on each metric. Tie rows are uncoloured.
Metric
Cobra
Interactive
Winner
OverallEditorial score
4.00 / 5
4.60 / 5
Interactive
Sub-ratingsCommissions & fees
4.50
4.80
Interactive
Sub-ratingsPlatforms & tools
4.50
5.00
Interactive
Sub-ratingsMobile app
2.00
4.00
Interactive
Sub-ratingsResearch
2.50
4.20
Interactive
Sub-ratingsEducation
2.00
4.00
Interactive
Sub-ratingsCustomer service
4.50
3.80
Cobra
Sub-ratingsRange of investments
3.00
5.00
Interactive
Sub-ratingsActive trading
5.00
5.00
Tie
PricingLowest margin rate
5.25%
5.83%
Cobra
PricingDefault cash sweep yield
—
4.33%
Interactive
PricingPFOF on equities
Does not accept
Does not accept
Tie
Where they differ on asset coverage
Asset class
Cobra
Interactive
OTC / Pink Sheets / OTCBB
Yes
Fractional shares
No
Yes
Options (multi-leg + spreads)
Yes
Mutual funds
No
Yes
US Treasuries / bonds
No
Forex
No
Yes
Futures
No
Crypto (direct)
No
Yes
International stocks / ADRs
No
24-hour overnight equity trading
No
Yes
Hard-to-borrow short locates
Yes
OTC / penny stocks
Yes
Options (US + global)
Yes
US Treasuries
Yes
Corporate / muni bonds, CDs
Yes
Futures / futures options
Yes
International stocks
Yes
IPOs
Yes
Prediction markets
Yes
Cobra strengths
Best-in-class HTB locates: 4 in-platform sources (Locate, Locate1, Locate2, Locate3) plus live-chat desk that frequently gives away free HTB shares in the morning
No overnight locate multiplier — unusual differentiator; most brokers charge 1×–4× to hold HTB overnight
Does not accept PFOF; ECN rebates and charges passed through transparently
True direct market access to ARCA, NSDQ, EDGX, BATS, IEX, CHX, dark pools, and 100+ venues via DAS
Flat 5.25% margin to $1M; negotiable above $1M
Pro-grade platform stable: DAS Trader Pro, Sterling Trader Pro, Cobra TraderPro, RealTick EMS — sub-millisecond execution from NY/NJ colo
Interactive strengths
Lowest margin rates in retail brokerage — IBKR Pro USD blended 5.83–6.83%
Broadest international access — 160+ exchanges across 36 countries, 28 currencies
Trader Workstation (TWS) with ~120 order types, algos, Risk Navigator
Deepest short-locate inventory; SYEP shares 50% of borrow fees with clients
Full retail API: TWS, FIX, REST/WebSocket — 7 languages
Futures and futures options on 35+ global exchanges