When issued trading is the buying and selling of a security that has been authorized but does not yet exist for delivery. Each trade is a conditional contract: price and quantity are locked in at execution, but the obligation to deliver and pay only takes effect if the security is actually issued. Traders and brokers refer to these positions with the shorthand “WI,” and they show up most often around Treasury auctions, corporate spinoffs, and stock splits. The economic point is price discovery — the market gets a running start on valuing the security before it enters broad circulation.
How to Spot a When Issued Security
You can tell a WI security from its ticker. On Nasdaq, a fifth character “V” is appended to flag when issued or when distributed status.1Nasdaq Trader. Nasdaq’s List of Fifth Character Symbol Suffixes On the NYSE, the base symbol carries a “WI” suffix, with variants like “PRWI” for preferred shares trading on a when issued basis and “RWI” for rights.2NYSE. TAQ NYSE MKT Order Imbalance Quick Reference Card Most brokerage platforms also display a “when issued” descriptor in the order confirmation window. That descriptor is your signal that the contract carries conditional terms rather than standard settlement.
When These Markets Appear
Treasury Auctions
The most active WI market by volume is in U.S. Treasury securities. When the Treasury announces a new security, WI trading begins immediately, well before the auction takes place. Dealers and institutional investors use that pre-auction window to establish positions based on expected yield, which helps the market converge on a fair price before competitive bids are due.3Federal Reserve Bank of New York. Treasury Market When-Issued Trading Activity After the auction, the securities continue trading on a WI basis until the issue date, at which point they become deliverable.4TreasuryDirect. General Auction Timing
Corporate Spinoffs
When a parent company announces a spinoff, a WI market often develops for the new company’s shares before they are distributed. This lets investors trade the future entity and begin establishing a market price ahead of the distribution date. Because the new company has no independent trading history, the WI period is where price discovery for the standalone business actually happens.
Stock Splits
Stock splits can create a brief WI window when new shares have been authorized but not yet credited to shareholder accounts. During a two-for-one split, the additional shares may trade on a WI basis until the distribution date. One wrinkle to watch: if you sell your shares before the ex-dividend date for a stock dividend or split, you also sell away your right to the additional shares, and the seller’s broker may issue a “due bill” for the shares owed.5Investor.gov (U.S. Securities and Exchange Commission). Ex-Dividend Dates: When Are You Entitled to Stock and Cash Dividends
Why IPOs Do Not Generate WI Trading
You might expect initial public offerings to produce WI trading. In the United States, they generally do not. SEC Regulation M restricts distribution participants and issuers from bidding for or purchasing a covered security during the “restricted period” leading up to and through the distribution. For most offerings, that period begins one business day before the offering price is set; for smaller or less liquid issuers, it begins five business days before.6eCFR. Regulation M Those restrictions effectively block the open pre-issuance trading that characterizes WI markets elsewhere.
How the Contract Works
A WI trade is a conditional contract. You agree on price and quantity at execution, but the obligation to deliver and pay kicks in only if the security is actually issued. FINRA’s Uniform Practice Code governs these arrangements under Rule 11130, which requires each party to send a written “when, as and if issued” confirmation.7FINRA. 11130. When, As and If Issued/Distributed Contracts That phrase captures the deal: the contract matures only if the underlying issuance goes through.
The National Securities Clearing Corporation handles clearing and settlement for virtually all broker-to-broker equity and debt trades, including WI transactions.8Federal Register. Self-Regulatory Organizations; National Securities Clearing Corporation; Order Approving of Proposed Rule Change To Accommodate a Shorter Standard Settlement Cycle and Make Other Changes Because the trade is contingent, no money or securities change hands on trade day. The contract sits open, binding both sides to their agreed terms, until the security becomes deliverable.
Margin and Payment Requirements
Even though the security does not yet exist, you still have to post margin on a WI position. Under Regulation T, the required margin on a net long or net short WI commitment is the same as if the security were already issued, adjusted for any unrealized gain or loss on the position.9eCFR. 12 CFR 220.4 – Margin Account For a typical margin equity security, that means an initial deposit of 50% of current market value.10eCFR. Part 220 – Credit by Brokers and Dealers (Regulation T)
Maintenance margin works the same way. FINRA Rule 4210 requires listed shares in a margin account to maintain collateral worth at least 25% of current market value, and WI positions are treated identically to issued securities for this calculation.11FINRA. 4210. Margin Requirements Current market value is recalculated daily off the previous business day’s closing price, so your requirement can shift each day as the WI price moves. If the price drops sharply, expect a margin call.
Cash accounts are handled differently. You do not have to pay before the security exists; instead, you must make full cash payment within one payment period after the issuer makes the security available for delivery.10eCFR. Part 220 – Credit by Brokers and Dealers (Regulation T)
Settlement Once Issuance Happens
Once the exchange or regulatory body confirms the official issuance date, the trade stops being conditional and converts to a standard settlement obligation. As of May 28, 2024, most securities settle on a T+1 basis, meaning one business day after the trade date.12FINRA. Understanding Settlement Cycles: What Does T+1 Mean for You? For WI trades that have been sitting open through the pre-issuance period, the final settlement date is keyed to when the securities become available for electronic delivery through the clearinghouse.
Treasury buyers should also know that accrued interest can factor into the settlement price. Treasury interest accrues on a semiannual basis, and when a security settles between coupon dates, the buyer compensates the seller for interest that has built up since the last payment date.13eCFR. 31 CFR 306.35 – Computation of Interest That applies at settlement, not during the WI trading period.
If the Issuance Is Canceled
If the corporate action or issuance behind a WI market is called off, every open WI trade is voided. A board that kills a spinoff, or a Treasury offering that gets pulled, nullifies all pending WI contracts. No money changes hands, no securities are delivered, and the ticker suffix disappears. Brokerage firms handle the adjustments automatically, releasing any margin or cash holds on the buyer’s account. The conditional “if” in “when, as and if issued” is what makes this clean: you committed to a trade contingent on an event, and the event never happened.7FINRA. 11130. When, As and If Issued/Distributed Contracts
Failure to Deliver After Conversion
Once a WI trade converts to a firm settlement obligation, standard failure-to-deliver rules apply. Under SEC Rule 204, a clearing participant that fails to deliver an equity security must close out the position by borrowing or purchasing equivalent shares no later than the opening of regular trading hours on the settlement day following the settlement date. If the participant misses the deadline, it and any broker-dealer routing through it cannot accept or execute short sale orders in that security until the fail is fully closed out and the replacement purchase has cleared.14eCFR. Close-out Requirement That short-sale restriction matters most in WI markets, where the newly issued security may have limited float and concentrated ownership in the first days of trading.
Tax Holding Period
For securities traded on an established market, the IRS uses trade date, not settlement date, to start the clock on your holding period. Your holding period begins the day after the trade date on which you bought, and it ends on the trade date you sold.15Internal Revenue Service. Publication 550 (2025), Investment Income and Expenses That matters for WI trades because the gap between trade date and settlement can be considerably longer than the standard one business day. If you buy a WI security weeks before issuance, your holding period still starts the day after execution, which works in your favor for reaching the one-year threshold for long-term capital gains treatment.
IRS Publication 550 does not include rules specifically addressing when issued transactions. The general trade-date rule for established-market securities appears to apply, but given the unusual settlement mechanics, a tax professional is worth consulting if the timing of your holding period matters for a large gain or loss.
Risks to Watch
The biggest risk unique to WI trading is cancellation. If the underlying event falls apart, your contract evaporates. A company can withdraw a planned spinoff, restructure a split, or delay an offering indefinitely. You are left with no position and no recourse, and any hedges or related trades you put on elsewhere may suddenly be unhedged.
Price volatility during the WI period can also run sharper than in regular markets. The security has no established trading history, no earnings track record under the new structure, and often limited analyst coverage. Liquidity tends to be thinner than in regular trading, which means wider bid-ask spreads and more price impact from individual orders. For Treasury WI markets, deep institutional participation blunts this. For corporate spinoffs and stock-split WI periods, the market can be genuinely thin.
Margin calls are the last piece. Your WI position is marked to market daily and carries the same margin requirements as an issued security, so a sharp move against you during the pre-issuance period triggers the same collateral demands you would face on any leveraged position. The difference: you cannot sell the underlying security to raise cash, because it does not exist yet. Your only options are depositing additional funds or closing the WI position at whatever price the market offers.