Muni Bond Pricing Methodology

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SQX delivers the best existing data.

Our customers count on us to provide exemplary pricing data on even the most hard-to-price muni bonds. At SQX, we use the most accurate, up-to-date data to determine the current market value of muni bonds. But sometimes, this data can be nearly impossible to find.


At SQX, we specialize in doing the impossible.


When data isn't readily available, our team of experts will search for the best data available. We don't give up, no matter how difficult data is to find. We guarantee that our in-depth five-tier method will deliver the most accurate data in existence.

The Five-Tier Method

1st - Recent Trade


  • Direct pricing uses observed prices from market participants
  • Select most recent trade in the last 30 days
  • Adjust for side
  • Adjust for lot size (retail/institutional)
  • Adjust for rate movement since the trade


A graph of the muni pricing methodology process, highlighting Recent Trade.
ISIN Side Amount SQX Price SQX Yield Total Adjustments Quote Date Quote Type Quote Amount Quote Price Base Yield
US575832V801 Bid 25 102.228 3.849 0.005 10/4/2024 Dealer Trade 10 102.357 3.803
US89602N7K40 Bid 25 107.676 3.182 0.03 10/6/2024 Dealer Trade 25 107.812 3.159
US64972EHE23 Bid 25 88.033 4.168 -0.032 10/4/2024 Dealer Trade 55 88.18 4.138
ISIN Side Amount SQX Price SQX Yield Total Adjustments Quote Date Quote Type Quote Amount Quote Price Base Yield
US575832V801 Bid 25 102.228 3.849 0.005 10/4/2024 Dealer Trade 10 102.357 3.803
US89602N7K40 Bid 25 107.676 3.182 0.03 10/6/2024 Dealer Trade 25 107.812 3.159
US64972EHE23 Bid 25 88.033 4.168 -0.032 10/4/2024 Dealer Trade 55 88.18 4.138
A graph of the muni pricing methodology process, highlighting Bids and Offers.

2nd - Bids and Offers


  • Direct pricing uses observed prices from
    market participants
  • Select best quote (bid/offer) from the last
    30 days
  • Adjust for side
  • Adjust for lot size (retail/institutional)
  • Adjust for rate movement since the quote


MBIS gathers bids and offers from a group of firms, which gives a much broader representation than simply actual trades.


ISIN Side Amount SQX Price SQX Yield Total Adjustments Quote Date Quote Type Quote Amount Quote Price Base Yield
US886112FT31 Bid 25 105.095 3.266 0.034 10/5/2024 BW Bid 160 105.379 3.19
US100041BH44 Bid 25 102.356 3.46 0.089 10/12/2024 Offer 30 102.452 3.44
US430883EX28 Bid 25 87.458 4.929 -0.005 10/7/2024 BW Bid 70 87.311 4.955
ISIN Side Amount SQX Price SQX Yield Total Adjustments Quote Date Quote Type Quote Amount Quote Price Base Yield
US886112FT31 Bid 25 105.095 3.266 0.034 10/5/2024 BW Bid 160 105.379 3.19
US100041BH44 Bid 25 102.356 3.46 0.089 10/12/2024 Offer 30 102.452 3.44
US430883EX28 Bid 25 87.458 4.929 -0.005 10/7/2024 BW Bid 70 87.311 4.955

3rd - Historical Spread Model


  • Historical spread model uses observed prices
    from market participants
  • Select best historical quote (trade/bid/offer)
  • Adjust for side
  • Adjust for lot size (retail/institutional)
  • Select appropriate curve
  • Adjust for rate movement since the quote


As with direct pricing, SQX uses MBIS bid/offer data beyond actual trades for historical spread pricing. Rather than defaulting to the benchmark curve, SQX selects the most appropriate curve to price each bond.

A graph of the muni pricing methodology process, highlighting Historical Spread.
ISIN Side SQX Price SQX Yield Total Adjustments Quote Date Quote Type Quote Price Base Yield
US491207N444 Bid 83.857 4.893 0.042 6/9/2024 Bid 90.351 3.822
US115516FW10 Bid 98.842 3.595 0.183 12/27/2023 Offer 106.27 0.763
US371608UK43 Bid 103.474 3.861 -0.099 5/12/2024 Bid 106.242 3.2
ISIN Side SQX Price SQX Yield Total Adjustments Quote Date Quote Type Quote Price Base Yield
US491207N444 Bid 83.857 4.893 0.042 6/9/2024 Bid 90.351 3.822
US115516FW10 Bid 98.842 3.595 0.183 12/27/2023 Offer 106.27 0.763
US371608UK43 Bid 103.474 3.861 -0.099 5/12/2024 Bid 106.242 3.2
A graph of the muni pricing methodology process, highlighting Peer Model.

4th - Peer Pricing Model


  • Peer pricing model uses similar “peer” bonds with recent market observations
  • Select best available peer with market data
  • Select best quote (trade/bid/offer) for selected peer
  • Apply yield adjustments (as shown in the above SQX pricing methods)
  • Adjust for maturity and credit differences between the bond and its peer


MBIS data provides a broad selection of peer groupings, allowing SQX to find the most precise peer data available

ISIN Side Amount SQX Price SQX Yield Price to Date Total Adjustments
US293065TK41 Bid 25 101.211 3.129 12/1/2024 0.056
US491196VC25 Bid 25 84.336 4.692 2/1/2024 0.097
US167560UJ83 Bid 25 95.115 3.907 12/1/2024 0.007
ISIN Quote Date Peer ISIN Quote Type Quote Amount Quote Price Peer Weight
US293065TK41 10/7/2024 US293065TL27 Purchase Trade 65 102.012 0.72
US491196VC25 10/3/2024 US491196YR65 Offer 5 86.9 0.9
US167560UJ83 10/3/2024 US45204EYD47 Purchase Trade 10 104.121 0.74

5th - Curve Pricing


  • When there is no available market data and no appropriate peer, curve pricing is applied
  • The credit rating and sector are used to find the
    most appropriate yield curve for the bond
  • The yield is obtained from the credit curve and
    then adjusted for the difference between the
    price specification and the curve characteristics


Rather than defaulting to the benchmark curve, SQX selects the most appropriate curve to price each bond.

A graph of the muni pricing methodology process, highlighting Curve Pricing.
ISIN SQX Price SQX Yield Price to Date Curve Name Use of Proceeds
US510390XE26 100.016 2.97 6/1/2023 AAA General Purpose
US224655MG28 96.934 3.462 2/1/2024 A Primary/Secondary Education
US804387PW25 98.304 3.347 3/1/2028 GO AAMinus General Purpose

The power of the SQX muni bond pricing model:

  • Accurate, independent, transparent
  • Cost effective
  • Customizable files
  • Complete pricing on ~1 million muni bonds
  • Consistent with MSRB G-30
  • Customer-service focused

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