How to Become Registered Market Maker for Exchange

To become market maker, firm go register as broker-dealer, join exchange, then register as market maker for specific securities. This one switch on standing duty to quote both sides of those names for a set portion of every session. Na registration wey rulebook follow am: minimum quote size, maximum quote width, how long quote must stay live during the day, and how much liquid capital must back am. Dem fit withdraw the status too, and the rules for that one dey written down.

Wetin be registered market maker?

Registered market maker na broker-dealer wey accept affirmative obligation for one specific exchange to post continuous, firm, two-sided quotes for the securities wey dem assign to am. Firm mean say person fit execute the quote. Under SEC Rule 602, exchange must honor the quotations wey e publish for market makers up to the displayed size. Those published quotations na raw material for the national best bid and offer, the consolidated best price wey dem use measure every broker execution. If person fit ignore the quotes, that benchmark no go get solid thing underneath am.

The privileges wey come with the status include bona fide market making exception to Regulation SHO locate requirement, plus margin treatment wey recognize hedged book. The obligation dey go the other way: quote must go up whether the firm want the position that day or not.

How you fit become market maker?

Each step below na separate application, and the order dey the same for every venue.

1. Register the firm with SEC as broker-dealer through Form BD and get FINRA membership. Traders qualify through Series 57 securities trader exam, while supervisors qualify through Series 24.
2. Arrange clearing and settlement, either as self-clearing member of NSCC and DTC or through clearing firm wey agree to carry the positions.
3. Apply for membership at every exchange where the firm plan to quote. Then file that exchange market maker registration form and take assignments for specific securities.
4. Connect to the venue quoting ports and pass the certification testing before the first quote go out.

Na step three dey surprise people. Registration na for each exchange, and one liquid stock fit dey quoted on more than dozen order books at the same time. The panel below count bid updates by venue for one popular stock during one half hour.

SELECT
    ex.venue_name                  AS venue,
    ex.venue_code                  AS venue_code,
    q.bids                         AS quote_update_count,
    formatReadableQuantity(q.bids) AS updates_label
FROM
(
    SELECT
        toUInt32(bid_exchange) AS exchange_id,
        count()                AS bids
    FROM global_markets.cache_stocks_quotes
    WHERE ticker = 'AAPL'
      AND sip_timestamp >= toDateTime('2026-07-16 16:00:00')
      AND sip_timestamp <  toDateTime('2026-07-16 16:30:00')
      AND bid_price > 0
    GROUP BY exchange_id
) AS q
INNER JOIN
(
    SELECT
        toUInt32(id)   AS exchange_id,
        any(name)      AS venue_name,
        any(acronym)   AS venue_code
    FROM global_markets.stocks_exchanges
    WHERE asset_class = 'stocks'
    GROUP BY exchange_id
) AS ex ON ex.exchange_id = q.exchange_id
ORDER BY q.bids DESC

16 separate venues publish bid for AAPL during that half hour. Nasdaq carry the heaviest traffic, with 46.67 thousand bid updates. Every one of those books get its own membership, market maker registration, and set of obligations.

Wetin be the quoting obligations?

The main requirement easy to explain but costly to maintain: live bid and live offer for every assigned security. Each one must cover at least one round lot of 100 shares, stay within defined distance from NBBO, and remain live for defined portion of the session.

Nasdaq describe that distance as designated percentage away from national best bid and offer. E be 8 percent for the most active Tier 1 stocks through the main part of the day, wider for less active names, and wider again during opening and closing periods. Quote wey sit outside the band no count as quote for compliance.

The NYSE equivalent na designated market maker, or DMM. One firm handle each listed stock, and e manage the opening and closing auctions on top of continuous quoting. NYSE Rule 104 require DMM to dey at the inside quote for at least 10 percent of the trading day in assigned securities wey average one million shares or more per day, and at least 15 percent for thinner ones. Supplemental liquidity providers get similar percentage commitment, but dem no get auction duties.

Width rules dey written as percentages, and the quoted spread wey dem must contain dey change through the day. This panel track am across one normal Thursday session for two popular names, measured in basis points of the midpoint. One basis point na one hundredth of one percent.

SELECT
    formatDateTime(toStartOfFifteenMinutes(toTimeZone(sip_timestamp, 'America/New_York')), '%H:%i') AS et_time,
    round(avgIf(10000 * (toFloat64(ask_price) - toFloat64(bid_price))
                / ((toFloat64(ask_price) + toFloat64(bid_price)) / 2), ticker = 'AAPL'), 2) AS aapl_spread_bps,
    round(avgIf(10000 * (toFloat64(ask_price) - toFloat64(bid_price))
                / ((toFloat64(ask_price) + toFloat64(bid_price)) / 2), ticker = 'KO'), 2)   AS ko_spread_bps
FROM global_markets.cache_stocks_quotes
WHERE ticker IN ('AAPL', 'KO')
  AND sip_timestamp >= toDateTime('2026-07-16 13:30:00')
  AND sip_timestamp <  toDateTime('2026-07-16 20:00:00')
  AND bid_price > 0
  AND ask_price > bid_price
GROUP BY et_time
HAVING countIf(ticker = 'AAPL') > 0
   AND countIf(ticker = 'KO') > 0
ORDER BY et_time

For the 09:30 bucket, average quoted spread measure 2.7 bps for AAPL and 2.98 bps for KO. By the 15:45 bucket, dem measure 0.95 bps and 1.31 bps. Follow the line across the middle of the day and the session shape go show by itself. Why spreads widen at the open break down that pattern, while wetin bid ask spread be explain the measure itself.

Wetin percentage width rule must handle

Same half hour, six popular names, arranged by quoted spread.

SELECT
    ticker,
    round(avg(10000 * (toFloat64(ask_price) - toFloat64(bid_price))
              / ((toFloat64(ask_price) + toFloat64(bid_price)) / 2)), 2) AS avg_spread_bps,
    count()                                                              AS quote_update_count
FROM global_markets.cache_stocks_quotes
WHERE ticker IN ('AAPL', 'MSFT', 'NVDA', 'KO', 'F', 'PFE')
  AND sip_timestamp >= toDateTime('2026-07-16 16:00:00')
  AND sip_timestamp <  toDateTime('2026-07-16 16:30:00')
  AND bid_price > 0
  AND ask_price > bid_price
GROUP BY ticker
ORDER BY avg_spread_bps

The tightest of the six, AAPL, average 1.23 basis points. The widest, F, average 7.09. Price level effect explain most of the gap. Take one cent spread as example: for $200 stock, e be half a basis point; for $20 stock, that same cent na five basis points. Percentage band dey affect high-priced names most, because one minimum increment fit use almost all the allowance. Some tight names don quote in half-cent increments since amended tick size rule start in November 2025, and half penny tick sizes explain how e work.

How options market makers dey register?

Options market makers too register venue by venue, across more than dozen US options exchanges. The appointment na by class, no be by contract. If firm take appointment for one name, the obligation cover stated percentage of the series listed in that class, commonly around 60 percent. Lead or primary market maker get higher requirement, with maximum bid-ask differentials inside limits wey widen as option price rise.

The word series carry the main meaning here. Every strike at every expiration na separate instrument with its own quote.

SELECT
    expiration_date                              AS expiration_date,
    formatDateTime(expiration_date, '%b %d, %Y') AS expiry_label,
    countDistinct(ticker)                        AS contract_count,
    countDistinctIf(ticker, volume > 0)          AS traded_contract_count
FROM global_markets.options_greeks
WHERE underlying_symbol = 'AAPL'
  AND date = toDate('2026-07-16')
  AND expiration_date >= toDate('2026-07-16')
GROUP BY expiration_date
ORDER BY expiration_date

On that date, listed AAPL options cover 24 expirations, from Jul 17, 2026 to Dec 15, 2028. The nearest expiration alone get 132 different contracts, and 132 of dem print trade during the session. Continuous quoting obligation across book that size na engineering problem before e become trading problem. why options orders no dey filled show how e look from the order entry side.

How much capital market maker need?

SEC Rule 15c3-1, the net capital rule, set the liquid capital wey broker-dealer must hold at all times. Dealer wey make market calculate am per security: $2,500 net capital for every security wey e make market in, or $1,000 for each one wey market value dey $5 or less. The calculation use average number of markets made during the previous 30 days, with floor of $100,000 and ceiling of $1,000,000. Firm wey also carry customer accounts start from $250,000 minimum instead.

Two details matter pass the headline figures. Net capital count liquid assets after haircuts on the firm own positions. Inventory wey hard to sell count for less than cash, and hedged book get different haircut from outright book. The calculation continuous, no be quarterly. If firm fall below 120 percent of its required minimum, e must send early warning notice to regulators. If e fall below the minimum itself, e must stop securities business until e climb back above the line. Exchanges and clearing firms add their own higher thresholds on top of SEC floor.

Wetin happen when market maker withdraw or get suspended?

Leaving get rules too. Nasdaq market maker wey voluntarily terminate registration for one security by withdrawing its two-sided quote no fit register again for that security for 20 business days. Excused withdrawals cover defined situations such as systems failures and certain legal or regulatory events. Exchange na the one wey grant the excuse; firm no fit claim am by itself.

Failure dey handled separately from withdrawal. Exchange fit suspend or terminate registration if firm repeatedly fail to meet quoting obligation. E fit also cut the firm quoting access at the port while review dey go on. FINRA rules handle the equivalent for quoted over-the-counter securities, where withdrawing quotation get its own notice requirements.

Market maker, wholesaler, or proprietary trading firm?

Three types of firm dey called market makers for normal conversation. But na only one carry exchange quoting obligation.

Registered market maker hold market maker registration at exchange for named securities. E quote both sides continuously inside the rulebook wey we describe above, and exchange fit suspend am if e no do am.

Wholesaler, wey dem also call internalizer, na firm wey dey take the other side of most retail orders. Retail broker route customer orders to wholesaler, and wholesaler execute dem away from exchanges at or better than NBBO. Wholesalers na broker-dealers subject to best execution and order handling rules. The biggest ones also hold exchange market maker registrations. But that retail execution business by itself no create continuous quoting obligation for any particular name. Wholesaler fit reject order and route am somewhere else. Registered market maker no fit remove its quote for assigned security and still keep the registration.

Proprietary trading firm wey trade only its own capital, without exchange market maker registration, get no quoting obligation at all. E fit take liquidity, post passive orders, or stay aside for the whole session. Plenty of these firms behave like market makers on many days. But registration still na the important line, because na exchange fit suspend the registration.

For the names behind these roles, see the biggest market makers in US equities. The economics dey inside how market makers make money and why market makers lose money, while venue fee schedules for the whole setup dey inside maker taker fees and rebates.

FAQ

You need license to become market maker?

Market making na registered broker-dealer firms business, no be individual business. Firm register with SEC, join FINRA, and apply at every exchange. The people wey trade for am hold qualifications such as Series 57 securities trader exam, while supervisors hold Series 24.

Wetin be the minimum net capital for market maker?

Under SEC Rule 15c3-1, market making dealer calculate $2,500 net capital for each security quoted, or $1,000 for each security valued at $5 or less. E get $100,000 floor and $1,000,000 ceiling. Firm wey carry customer accounts face $250,000 minimum. Exchanges and clearing firms set their own higher thresholds.

What percentage of trading day market maker must quote?

E depend on venue and role. NYSE designated market makers must dey at inside quote for at least 10 percent of trading day in more active assigned securities, and at least 15 percent in thinner ones. Nasdaq market makers must hold continuous two-sided quotes within designated percentage of NBBO during regular hours.

Market maker fit just stop quoting?

Yes, but consequences dey. If market maker withdraw two-sided quote in Nasdaq security, registration for that name terminate, and re-registration block for 20 business days. Excused withdrawals wey exchange grant cover defined situations such as systems failures.

Wholesaler na the same thing as registered market maker?

No, not for regulatory meaning. Wholesaler execute retail order flow away from exchanges at or better than NBBO, and many wholesalers also hold exchange market maker registrations. The internalization business itself no carry continuous quoting obligation for any particular security.

Every panel here get the SQL wey produce am. Expand one to see how dem measure quoted spread across session, or ask the same question in plain English on the Strasmore terminal.