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How to Buy Co-Diagnostics, Inc. Common Stock (CODX) Stock

Compare 15 brokers offering CODX, check which offer overnight sessions, and confirm OTC tier access.

CODX
$1.09−$0.0600 (−5.22%)
Day range
$1.09 – $1.19
52-week range
$0.9057 – $46.50
Volume
186.7K
Market cap
$7.61M
Exchange
XNAS
Asset class
common
Optionable
No
24-hour trading
7 brokers — verify symbol
Fractional shares
9 brokers — verify symbol
Tokenized
No
Market cap tier
nano

Where to buy CODX

15 brokers in our matrix offer CODX (penny/OTC-friendly subset). Verify availability and current fees with each broker before trading.

BrokerCommissionFractionalExtendedOvernightOptionsOTCQXOTCQBPink Cur.Pink Ltd.GreySurchargeShort locate
Firstrade logoFirstradeReview$0
~4,000+ tickers, ≥ $5
~1,200
$0FullFullFullFullLimited—limited
Interactive Brokers logoInteractive BrokersReview$0 (Lite) / per-share (Pro)
~10,000
per-contract pricingFullFullFullFullFullPer-share pricing appliesbest
TradeStation logoTradeStationReview$0 listed
$0.50 / $0.60FullFullFullFullLimited$0.005/share OTC (TS Select/TS Go), $0 up to 10,000 sharesstrong
Charles Schwab (thinkorswim) logoCharles Schwab (thinkorswim)Review$0
Schwab Stock Slices, S&P 500 only, ≥ $5/slice, up to 30 at once
~1,130
$0.65FullFullFullLimitedLimitedVariable service fees on certain restrictedmoderate
E*TRADE (Morgan Stanley) logoE*TRADE (Morgan Stanley)Review$0 listed
~20
$0.65FullFullFullFullLimited$6.95 flat on penny stocksmoderate
Fidelity logoFidelityReview$0
Stocks by the Slice, 7,000+ stocks/ETFs, from $1
$0.65FullFullNoNoNo—limited
Merrill Edge logoMerrill EdgeReview$0
$0.65FullFullFullLimitedNo—none
Moomoo logoMoomooReview$0
$0LimitedLimitedLimitedNoNo—limited
Public.com logoPublic.comReview$0
rebate modelLimitedLimitedLimitedNoNo—none
SoFi Active Investing logoSoFi Active InvestingReview$0
$0FullLimitedLimitedNoNo—none
tastytrade logotastytradeReview$0 stocks
$1.00 open, $0 close (capped at $10 per leg)LimitedLimitedLimitedNoNo—limited
Webull logoWebullReview$0
$0LimitedLimitedLimitedNoNo—limited
CenterPoint Securities logoCenterPoint SecuritiesReviewPer-share (day-trader oriented)
per-contractFullFullFullFullFullPer-sharebest
Cobra Trading logoCobra TradingReviewPer-share (day-trader oriented)
per-contractFullFullFullFullFullPer-sharebest
SpeedTrader logoSpeedTraderReviewPer-share (day-trader oriented)
per-contractFullFullFullFullFullPer-sharebest

24-Hour / Overnight trading

These brokers run an overnight session: Charles Schwab (thinkorswim), Interactive Brokers, Robinhood, E*TRADE (Morgan Stanley), Webull, Moomoo, Firstrade. Each publishes its own list of symbols admitted to that session, and those lists are typically limited to large-cap index members. We do not track them per symbol, so check whether CODXis on your broker’s list before planning an overnight order.

Overnight sessions route through ATSs, typically have wider spreads, accept limit orders only, and offer no guaranteed fills.

Penny stock / OTC routing

CODX 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 Co-Diagnostics, Inc. Common Stock

Co-Diagnostics Inc is a molecular diagnostics company. The company develops, manufactures, licenses, and commercializes reagents used for diagnostic tests that function via the detection and/or analysis of nucleic acid molecules (DNA or RNA), including molecular tools for detection of infectious diseases. CDI's low-cost system uses its tests to diagnose tuberculosis, Zika, hepatitis B and C, Malaria, dengue and others. The Company also uses its proprietary technology to design specific tests for its Co-Dx PCR platform and to locate genetic markers for use in applications other than infectious diseases.
Sector
SURGICAL & MEDICAL INSTRUMENTS & APPARATUS
Employees
115
Headquarters
SALT LAKE CITY, UT
Listed
2017-07-12
Market cap
$7.61M

Frequently asked

Where can I buy Co-Diagnostics, Inc. Common Stock (CODX)?

CODX 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 CODX after hours or overnight?

Most brokers in the matrix support pre-market (4 AM–9:30 AM ET) and after-hours (4–8 PM ET) sessions. A true overnight session is offered by Charles Schwab (thinkorswim), Interactive Brokers, Robinhood, E*TRADE (Morgan Stanley), and others, but each admits only its own list of symbols — usually large-cap index members — so confirm CODX is eligible with your broker. Overnight sessions route through ATSs with wider spreads and limit orders only.

Does Robinhood offer CODX?

No. Robinhood does not provide access to the OTC tier CODX trades on. Interactive Brokers, TradeStation, and Firstrade have the broadest OTC coverage.

Does Fidelity offer CODX?

Partial. Fidelity's OTC access is tier-limited — see the OTC columns in the matrix to check whether CODX's specific tier is supported.

Does Webull offer CODX?

Partial. Webull's OTC access is tier-limited — see the OTC columns in the matrix to check whether CODX's specific tier is supported.

Is CODX optionable?

No. CODX does not have listed options contracts at the moment.

Is there a tokenized version of CODX?

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 CODX?

9 brokers in the matrix offer fractional shares, but each restricts the feature to its own symbol universe — Schwab to the S&P 500, Robinhood to stocks above a market-cap floor, Fidelity to a 7,000-name list. Check the Fractional column above for each broker's scope and minimum, then confirm CODX qualifies.

Related reading

Background on the trading features that apply to CODX.