← All Market Grades
PolymarketMarket Grades by Belief SystemsBeta

Will Orlando Magic win the 2027 NBA Finals?

Belief Systems Market Grade

D

Weak market quality

As of Oct 23, 2026 · D since Oct 23, 2026Measured from Sep 23 to Oct 23, 2026

FLiquidity · Very weakB+Integrity · StrongUpdated daily

Grade limits apply: C+ from the weaker of liquidity and integrity, C+ from trading evidence.

Rates how well this market trades, from A+ (best) to F: how much you can trade near the price, and how many different traders take part. Not a forecast of the outcome.

Market status
Active
Under review
No
Data
Current · 100% observed
Trading activity
Limited trading activity · grade limit C+

Liquidity and integrity

The two measures behind the grade.

F

Liquidity

Very weak

How easily the market trades: the depth of buy and sell quotes, the cost of a typical trade, and how steadily trading happens.

F since Oct 23, 2026 · steady

B+

Integrity

Strong

How broad and orderly trading is: how many different traders take part, and how often quotes are missing, one-sided, or crossed.

It screens for concentrated trading. It is not proof that a market can’t be manipulated, since many accounts can belong to one trader.

B+ since Oct 23, 2026 · steady

Both are recalculated daily over the same 30-day period. The overall grade moves more slowly: a change has to hold before it counts.

Grade changes

Every change stays on the record, including corrected ones.

Oct 20, 2026
Review closed

Reason: overall measured quality · Confirmed

Why it changed

The recorded trigger was a change in the combined liquidity and integrity assessment.

Dates and identifier
Review began Oct 19, 2026 · data through Oct 20, 2026Took effect Oct 20, 2026 · published Oct 20, 2026Action identifier for API lookup: polymarket:0xfbb36055840f0151f5d161f6c5cb90ff34641404c7dedf93605b53b7c0ffdd90:1:7
Oct 20, 2026
Downgrade

Reason: overall measured quality · Confirmed

Why it changed

The recorded trigger was a change in the combined liquidity and integrity assessment.

Dates and identifier
Review began Oct 19, 2026 · data through Oct 20, 2026Took effect Oct 20, 2026 · published Oct 20, 2026Action identifier for API lookup: polymarket:0xfbb36055840f0151f5d161f6c5cb90ff34641404c7dedf93605b53b7c0ffdd90:1:6
Oct 19, 2026
Review opened

Reason: overall measured quality · Open

Why it changed

The recorded trigger was a change in the combined liquidity and integrity assessment. A review does not by itself change the grade.

Dates and identifier
Review began Oct 19, 2026 · data through Oct 19, 2026Took effect Oct 19, 2026 · published Oct 19, 2026Action identifier for API lookup: polymarket:0xfbb36055840f0151f5d161f6c5cb90ff34641404c7dedf93605b53b7c0ffdd90:1:5
Oct 16, 2026
Review closed

Reason: overall measured quality · Removed, not confirmed

Why it changed

The review ended without enough confirmation for a grade change.

Dates and identifier
Review began Oct 2, 2026 · data through Oct 16, 2026Took effect Oct 16, 2026 · published Oct 16, 2026Action identifier for API lookup: polymarket:0xfbb36055840f0151f5d161f6c5cb90ff34641404c7dedf93605b53b7c0ffdd90:1:4
Oct 2, 2026
Review opened

Reason: overall measured quality · Open

Why it changed

The recorded trigger was a change in the combined liquidity and integrity assessment. A review does not by itself change the grade.

Dates and identifier
Review began Oct 2, 2026 · data through Oct 2, 2026Took effect Oct 2, 2026 · published Oct 2, 2026Action identifier for API lookup: polymarket:0xfbb36055840f0151f5d161f6c5cb90ff34641404c7dedf93605b53b7c0ffdd90:1:3
Show all 6 changes
Sep 17, 2026
Record opened

Reason: a change in market status · Confirmed

Details

The market’s grading status changed under the methodology’s lifecycle rules.

Dates and identifier
Review start not recorded · data through Sep 17, 2026Took effect Sep 17, 2026 · published Sep 17, 2026Action identifier for API lookup: polymarket:0xfbb36055840f0151f5d161f6c5cb90ff34641404c7dedf93605b53b7c0ffdd90:1:1
Details and citationShow

The grade

Market status
ActiveCurrent grade, reviewed daily.
Under review
No
Data status
CurrentEnough data was observed.
Grade limits
C+ from weaker component (in force)C+ from trading evidence (in force)
Trading activity
Limited trading activity (T0)Trading activity was below the evidence threshold, or too few trades were observed to assess it. A C+ grade limit from trading evidence is on this record.
Grade since
Oct 23, 2026

The data

Data observed
Full · 100%
Days observed
30 of 30 needed
Measured over
Sep 23 to Oct 23, 2026
First observed
Aug 18, 2026
Last complete day
Oct 23, 2026
Data check codes
None

Identifiers and versions

Record ID
polymarket:0xfbb36055840f0151f5d161f6c5cb90ff34641404c7dedf93605b53b7c0ffdd90:1A change to what the market question means starts a new record.
Venue
Polymarket
Market ID
0xfbb36055840f0151f5d161f6c5cb90ff34641404c7dedf93605b53b7c0ffdd90
Correction
Original
Calculation status
candidate
Last confirmed change
View it in grade changes
Methodology version
mg-1.2
Calibration version
mg-cal-1.0

Cite this grade

Market Grades by Belief Systems: Will Orlando Magic win the 2027 NBA Finals? Market Grade D.

Episode:
polymarket:0xfbb36055840f0151f5d161f6c5cb90ff34641404c7dedf93605b53b7c0ffdd90:1
Flags:
none
Lifecycle:
Active
Data status:
Current
Under review:
No
Trading activity:
Limited trading activity (T0) · grade limits C+ (weaker component), C+ (trading evidence)
Book coverage:
full · 100%
As of:
2026-10-23 · window 2026-09-23 to 2026-10-23
Versions:
mg-1.2 / mg-cal-1.0

https://beliefsystems.xyz/grades/polymarket/0xfbb36055840f0151f5d161f6c5cb90ff34641404c7dedf93605b53b7c0ffdd90

How grades are calculated ↗

Market Grades are in beta. Grades are live, and the methodology is being validated in public on a published schedule. Validation roadmap ↗

Disclosures

Market Grades measure market quality – liquidity, integrity – not the likelihood of any outcome.

Market Grades are unsolicited: no graded party requests, pays for, or previews a grade. Belief Systems holds no positions in graded markets.

A grade is not a recommendation to buy, sell, or hold any position, and is not a substitute for a user's own assessment.