Why Your Options Order No Dey Fill

Your options order dey fail to fill mostly because of things wey retail screen no dey show: where your order sit for the exchange allocation queue, whether the size wey you join still dey there, how wide the market really be, and whether a multi-leg order net price fit execute at all. Displayed quote na only snapshot of wetin person agree to trade some moments ago. Matching that price put your order for line. E no put you for front.

Quote for options na promise say you fit trade there?

No. Quote na two-sided offer wey the person wey post am fit cancel or reprice anytime, and the size attached to am apply only for that moment. For underlying wey get active quotes, one contract fit republish bid and offer many times every second. Our guide to options bid-ask spread explain wetin the two sides mean. Wetin decide fill na how short any particular version of that quote stay.

The panel below count every quote update wey the feed carry for Apple option contracts across one fixed 30-second window, starting 2:00:00 p.m. ET on June 17, 2026, second by second.

SELECT
    formatDateTime(toTimeZone(sip_timestamp, 'America/New_York'), '%H:%i:%S') AS et_time,
    round(count() / 1000, 1)                                                 AS quote_updates_k,
    round(count() / uniqExact(ticker), 1)                                    AS updates_per_contract
FROM global_markets.cache_options_quotes
WHERE ticker IN
(
    SELECT ticker
    FROM global_markets.options_greeks
    WHERE underlying_symbol = 'AAPL'
      AND date = '2026-06-17'
)
  AND sip_timestamp >= toDateTime('2026-06-17 18:00:00', 'UTC')
  AND sip_timestamp <  toDateTime('2026-06-17 18:00:30', 'UTC')
GROUP BY et_time
ORDER BY et_time

For the first second, the feed carry about 0.9 thousand quote updates across those contracts, roughly 1.9 republished quotes per contract within that one second. Order ticket no dey move at that speed. By the time your click turn message wey sit for exchange, the book wey e enter don already change plenty.

Being at the best price put person first for line?

No be by itself. Stock exchanges mostly use price-time priority: for one particular price, whoever arrive first trade first. Options exchanges add two rules on top, and na those rules dey leave resting orders stranded.

Public customer orders come first. Almost every US options exchange give public customer order priority over market maker and professional orders wey dey rest for the same price. That part favor retail trader.

After customer priority, allocation na pro-rata, no be based on time. Exchange divide incoming order across resting orders according to their size, often with small extra priority for whoever post the price first. Size, no be arrival time, determine each person share.

Put the two rules together: 1 lot wey dey rest beside 500 lots count as one contract out of 501, no be one of two orders for queue. Incoming 100 lot fit sweep the price, but only one contract fit land on the small order.

The panel below group every Apple option trade printed on June 17, 2026 by trade size. E then compare each group share of the day prints with its share of the day contracts.

WITH
    (
        SELECT count()
        FROM global_markets.options_trades
        WHERE underlying_symbol = 'AAPL'
          AND sip_timestamp >= toDateTime('2026-06-17 00:00:00', 'UTC')
          AND sip_timestamp <  toDateTime('2026-06-18 00:00:00', 'UTC')
    ) AS day_prints,
    (
        SELECT sum(size)
        FROM global_markets.options_trades
        WHERE underlying_symbol = 'AAPL'
          AND sip_timestamp >= toDateTime('2026-06-17 00:00:00', 'UTC')
          AND sip_timestamp <  toDateTime('2026-06-18 00:00:00', 'UTC')
    ) AS day_contracts
SELECT
    multiIf(size = 1,    '1 contract',
            size <= 5,   '2 to 5',
            size <= 20,  '6 to 20',
            size <= 100, '21 to 100',
                         'over 100')       AS size_bucket,
    round(100 * count()   / day_prints, 2) AS share_of_trades_pct,
    round(100 * sum(size) / day_contracts, 2) AS share_of_volume_pct
FROM global_markets.options_trades
WHERE underlying_symbol = 'AAPL'
  AND sip_timestamp >= toDateTime('2026-06-17 00:00:00', 'UTC')
  AND sip_timestamp <  toDateTime('2026-06-18 00:00:00', 'UTC')
GROUP BY size_bucket
ORDER BY min(size)

Single-contract trades make up 48.48% of the day prints and 7.83% of the contracts wey change hands. The over 100 bucket turn that pattern upside down: 0.44% of prints carry 16.67% of the volume. Under pro-rata allocation, na the second number determine how much of incoming order reach any one resting order. Market makers quote both sides continuously and manage inventory as dem go, and our guide on how market makers make money explain am in detail.

Why my options order no dey fill at the mid?

Mid na arithmetic: add bid and ask, then divide by two. Nobody must trade there. The two prices wey always dey available na the naturals: ask if you dey buy, bid if you dey sell. Everything between natural and mid na negotiation. E go complete when the other side model price the contract on your side of midpoint, or when another public order show up to do the opposite trade.

How much space that negotiation cover depend on how wide the market be, and market width fit change plenty based on contract price. The panel below use the same 30-second window. E group every Apple options quote by contract price and report median quoted spread in cents, plus the same spread as percentage of mid.

SELECT
    price_bucket,
    round(quantileExact(0.5)(spread) * 100, 1)       AS median_spread_cents,
    round(quantileExact(0.5)(100 * spread / mid), 1) AS spread_pct_of_mid
FROM
(
    SELECT
        toFloat64(ask_price) - toFloat64(bid_price)       AS spread,
        (toFloat64(ask_price) + toFloat64(bid_price)) / 2 AS mid,
        multiIf(mid < 0.50,  'under $0.50',
                mid < 2.00,  '$0.50 to $2',
                mid < 5.00,  '$2 to $5',
                mid < 15.00, '$5 to $15',
                             '$15 and up')                AS price_bucket,
        multiIf(mid < 0.50, 1, mid < 2.00, 2, mid < 5.00, 3, mid < 15.00, 4, 5) AS bucket_order
    FROM global_markets.cache_options_quotes
    WHERE ticker IN
    (
        SELECT ticker
        FROM global_markets.options_greeks
        WHERE underlying_symbol = 'AAPL'
          AND date = '2026-06-17'
    )
      AND sip_timestamp >= toDateTime('2026-06-17 18:00:00', 'UTC')
      AND sip_timestamp <  toDateTime('2026-06-17 18:00:30', 'UTC')
      AND bid_price > 0
      AND ask_price > bid_price
)
GROUP BY price_bucket
ORDER BY min(bucket_order)

Contracts for under $0.50 bucket quote median spread of 17 cents, wey equal 75% of the mid. Contracts for $15 and up bucket quote 170 cents, or 3.8% of the mid. In cents, the expensive contract get wider quote. As percentage, the cheap contract get market wey wide pass by far. So, order wey rest for its midpoint dey ask counterparty to give up large part of that spread. Liquidity and volatility pull market width for different directions, and two contracts on the same underlying fit behave completely differently.

A market order versus limit order remove the pricing question and replace am with another one. Market order trade against anything wey book hold at that moment. For thin options series, that price fit dey several ticks away from the last quote wey your screen show.

Why spread no dey fill when both legs look executable?

Multi-leg order no dey sit inside the two single-leg books. E route go complex order book and dem match am as one package, using its net price. Exchange fit fill am against another complex order, or against single-leg books when their combined price beat your net price. But e no go do either one until the whole package price well.

Take hypothetical two-leg call spread. Long leg quote $1.20 bid at $1.35 ask, while short leg quote $0.60 bid at $0.72 ask. To buy the package at the naturals cost $1.35 minus $0.60, wey be $0.75 debit. To sell at the naturals bring in $1.20 minus $0.72, wey be $0.48 credit. Net market for the package na $0.48 bid at $0.75 ask, with midpoint of $0.615. Watching the legs separately no tell you whether $0.62 fit execute. Combined book get its own two-sided market and its own resting orders.

Two things follow. If one leg trade at your price for single-leg screen, your spread still fit remain unfilled. Your order no dey rest for that book from the beginning. Spread wey you price with leg terms instead of net terms dey price against book wey no exist.

Why order no go fill for strike wey get zero volume?

Nothing spoil. Most listed strikes no dey trade on most days. Chain list every strike wey exchange open, and majority dey show quote but nobody touch dem, sometimes for weeks. Volume count contracts wey change hands today. Open interest count positions wey still dey outstanding, and our options volume versus open interest explainer break down the difference.

The panel below measure how thin the outer strikes become. E take every Apple contract with 20 to 45 days to expiry across May and June 2026. E group dem based on how far strike dey from underlying price that day, then report median daily volume beside share of contract-days wey print fewer than 10 contracts.

SELECT
    moneyness_bucket,
    round(quantileExact(0.5)(toFloat64(volume)), 0) AS median_daily_volume,
    round(100 * countIf(volume < 10) / count(), 1)  AS share_under_10_lots_pct
FROM
(
    SELECT
        abs(toFloat64(strike_price) / toFloat64(underlying_close) - 1) AS gap,
        multiIf(gap < 0.02, '0% to 2% from spot',
                gap < 0.05, '2% to 5% from spot',
                gap < 0.10, '5% to 10% from spot',
                gap < 0.20, '10% to 20% from spot',
                            'more than 20% from spot') AS moneyness_bucket,
        multiIf(gap < 0.02, 1, gap < 0.05, 2, gap < 0.10, 3, gap < 0.20, 4, 5) AS bucket_order,
        volume
    FROM global_markets.options_greeks
    WHERE underlying_symbol = 'AAPL'
      AND date >= '2026-05-01'
      AND date <  '2026-07-01'
      AND days_to_expiry BETWEEN 20 AND 45
      AND underlying_close > 0
)
GROUP BY moneyness_bucket
ORDER BY min(bucket_order)

Contracts for 0% to 2% from spot get median daily volume of 354 contracts, and 2% of contract-days print below 10. Contracts for more than 20% from spot record median of 6 contracts per day, while 55.4% of contract-days for that group print below 10. Order wey rest on one of those strikes dey wait for flow wey no dey come. The only standing counterparty na market maker wey first quote that strike.

Wetin this machinery change about order ticket

• Spread dey price on the net. Complex book match packages, and price for one leg no get standing place there.
• Mid dey work as anchor. The two prices wey always dey available for wide market na the naturals: ask for buy and bid for sell.
• Size determine share of pro-rata fill. 1 lot wey rest beside much bigger orders receive proportional piece of anything wey arrive.
• Quiet strike na quoting question before e become order question. Nothing dey arrive to match against.

FAQ

Why my options limit order no dey fill when e dey at bid?

Joining bid put your order for queue at that price. Options exchanges allocate fills based on customer status and size, no be only arrival time. Small order wey rest beside much bigger ones receive proportional piece of anything wey trade, and that piece fit round down to zero on a modest print.

Options exchanges dey fill orders according to when dem arrive?

Mostly no. Public customer orders get priority over market maker and professional orders at the same price. Dem generally allocate the remaining size pro-rata, according to each resting order size. Some exchanges add priority for whoever post the price first.

Wetin paying the natural mean for options order?

Natural na price wey already display for your side of market: ask when you dey buy, bid when you dey sell. Order at natural fit execute against current quote. Order at mid must wait for the other side to improve.

E normal for option with zero volume to never fill?

Yes. Most listed strikes no trade on most days, and resting order for one of dem dey compete for flow wey no dey arrive. Quote wey show there normally na market maker obligation. Whether fill happen depend on whether market maker want that price at that moment.

Every panel above carry the exact SQL underneath am. To run the same measurements for contract wey you dey follow, ask the question for plain English on the Strasmore terminal.