How to Buy AI Infrastructure Acquisition Corp. Units, each consisting of one Class A Ordinary Share and one Right (AIIA.U) Stock
Compare 15 brokers offering AIIA.U, check 24-hour trading availability, and confirm OTC tier access.
- Day range
- $10.33 – $10.33
- 52-week range
- $10.00 – $10.49
- Volume
- 4
- Market cap
- —
Where to buy AIIA.U
15 brokers in our matrix offer AIIA.U (penny/OTC-friendly subset). Verify availability and current fees with each broker before trading.
| Broker | Commission | Fractional | Extended | Overnight | Options | OTCQX | OTCQB | Pink Cur. | Pink Ltd. | Grey | Surcharge | Short locate |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Firstrade | $0 | ~4,000+ tickers, ≥ $5 | ~1,200 | $0 | Full | Full | Full | Full | Limited | — | limited | |
 Interactive Brokers | $0 (Lite) / per-share (Pro) | ~10,000 | per-contract pricing | Full | Full | Full | Full | Full | Per-share pricing applies | best | ||
 TradeStation | $0 listed | $0.50 / $0.60 | Full | Full | Full | Full | Limited | $0.005/share OTC (TS Select/TS Go), $0 up to 10,000 shares | strong | |||
 Charles Schwab (thinkorswim) | $0 | Schwab Stock Slices, S&P 500 only, ≥ $5/slice, up to 30 at once | ~1,130 | $0.65 | Full | Full | Full | Limited | Limited | Variable service fees on certain restricted | moderate | |
 E*TRADE (Morgan Stanley) | $0 listed | ~20 | $0.65 | Full | Full | Full | Full | Limited | $6.95 flat on penny stocks | moderate | ||
 Fidelity | $0 | Stocks by the Slice, 7,000+ stocks/ETFs, from $1 | $0.65 | Full | Full | No | No | No | — | limited | ||
 Merrill Edge | $0 | $0.65 | Full | Full | Full | Limited | No | — | none | |||
 Moomoo | $0 | $0 | Limited | Limited | Limited | No | No | — | limited | |||
 Public.com | $0 | rebate model | Limited | Limited | Limited | No | No | — | none | |||
 SoFi Active Investing | $0 | $0 | Full | Limited | Limited | No | No | — | none | |||
 tastytrade | $0 stocks | $1.00 open, $0 close (capped at $10 per leg) | Limited | Limited | Limited | No | No | — | limited | |||
 Webull | $0 | $0 | Limited | Limited | Limited | No | No | — | limited | |||
 CenterPoint Securities | Per-share (day-trader oriented) | per-contract | Full | Full | Full | Full | Full | Per-share | best | |||
 Cobra Trading | Per-share (day-trader oriented) | per-contract | Full | Full | Full | Full | Full | Per-share | best | |||
 SpeedTrader | Per-share (day-trader oriented) | per-contract | Full | Full | Full | Full | Full | Per-share | best |
24-Hour / Overnight trading
AIIA.U may be eligible for overnight trading via Charles Schwab (thinkorswim), Interactive Brokers, Robinhood, E*TRADE (Morgan Stanley), Webull, Moomoo, Firstrade. Each broker maintains its own eligibility list — confirm before placing an order.
Overnight sessions route through ATSs, typically have wider spreads, accept limit orders only, and offer no guaranteed fills.
Penny stock / OTC routing
AIIA.U trades on the OTC markets. Broker support varies sharply by tier (OTCQX, OTCQB, Pink Current, Pink Limited, Grey). Fidelity and Robinhood exclude pink/grey entirely. For short-locate on small-caps, Interactive Brokers and the day-trader specialists (Cobra Trading, SpeedTrader, CenterPoint) have the deepest inventory.
About AI Infrastructure Acquisition Corp. Units, each consisting of one Class A Ordinary Share and one Right
- Sector
- BLANK CHECKS
- Employees
- 2
- Headquarters
- LAS VEGAS, NV
- Listed
- 2025-10-03
Frequently asked
Where can I buy AI Infrastructure Acquisition Corp. Units, each consisting of one Class A Ordinary Share and one Right (AIIA.U)?
AIIA.U is offered by 15 brokers in our matrix, including Firstrade, Interactive Brokers, TradeStation, Charles Schwab (thinkorswim), E*TRADE (Morgan Stanley). Compare commissions, fractional eligibility, and overnight availability in the broker matrix above.
Can I buy AIIA.U after hours or overnight?
Yes. AIIA.U is on the 24-hour eligibility list for Charles Schwab (thinkorswim), Interactive Brokers, Robinhood, E*TRADE (Morgan Stanley), and others. Overnight sessions route through ATSs with wider spreads and limit-orders only.
Does Robinhood offer AIIA.U?
No. Robinhood does not provide access to the OTC tier AIIA.U trades on. Interactive Brokers, TradeStation, and Firstrade have the broadest OTC coverage.
Does Fidelity offer AIIA.U?
Partial. Fidelity's OTC access is tier-limited — see the OTC columns in the matrix to check whether AIIA.U's specific tier is supported.
Does Webull offer AIIA.U?
Partial. Webull's OTC access is tier-limited — see the OTC columns in the matrix to check whether AIIA.U's specific tier is supported.
Is AIIA.U optionable?
No. AIIA.U does not have listed options contracts at the moment.
Is there a tokenized version of AIIA.U?
Not in our current dataset. The tokenized stock universe (Kraken xStocks, Binance Alpha/Ondo, Robinhood EU, Hyperliquid HIP-3) is expanding quickly — we refresh quarterly.
Can I buy a fractional share of AIIA.U?
Yes. Multiple brokers in the matrix support fractional shares for AIIA.U — see the Fractional column above for per-broker eligibility and minimums.