Bullish estimates $48.6B September trading volume
Bullish's September package pairs $48.6 billion in total trading volume with separate Bitcoin and Ethereum volatility measures.
Sentiment and the balance of points
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Rhea-AI Filing Summary
Bullish released its September 2026 monthly metrics, reporting $48.6 billion in total trading volume, including $42.2 billion in total spot volume. Average trading spread was 2.14 basis points; monthly average volatility was 32% for BTC and 42% for ETH.
The unaudited metrics for months in the most recent fiscal quarter are preliminary, based on estimates and subject to completion of financial closing procedures; final quarterly results might vary. Bullish defines trading volume as the notional value of matched trades and average trading spread as commissions expressed as a percentage of trading volume.
Key Figures
Key Terms
Trading Volume financial
Average Trading Spread financial
Monthly Average Volatility technical
Adaptive Diversified Liquidity Index technical
Perpetual financial
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
How much trading volume did BLSH report for September 2026?
What were BLSH's September 2026 trading spread and BTC and ETH volatility?
Are Bullish's September 2026 monthly metrics final?
AI-generated analysis. How Rhea-AI works. Not financial advice.
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 6-K
Report of Foreign Private Issuer
Pursuant to Rule 13a-16 or 15d-16 of
the Securities Exchange Act of 1934
For the month of October 2026
Commission File No. 001-42797
BULLISH
Unit B1, The Grove Too
Esterley Tibbetts Highway,
Grand Cayman, Cayman Islands
(Address of principal executive office)
Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
Form 20-F ☒ Form 40-F ☐
INFORMATION CONTAINED IN THIS REPORT ON FORM 6-K
On October 6, 2026, Bullish issued a press release titled “Bullish releases September 2026 monthly metrics.” A copy of the press release and the monthly metrics for September 2026 are furnished as Exhibits 99.1 and 99.2, respectively, to this report on Form 6-K.
INDEX TO EXHIBITS
Exhibit No. | Description |
99.1 | Press release of Bullish dated October 6, 2026 |
99.2 | Monthly Metrics Report for September 2026 |
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
| BULLISH |
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Date: October 6, 2026 | By: | /s/ Jose A. Torres |
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| Jose A. Torres |
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| Chief Accounting Officer |
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Exhibit 99.1
Bullish releases September 2026 monthly metrics
10/6/2026
Cayman Islands, October 6, 2026 – Bullish (NYSE: BLSH), an institutionally focused global digital asset platform that provides market infrastructure and information services, released its monthly metrics for September 2026 on Tuesday, October 6, 2026.
These metrics include trading volume, average trading spread, and measures of volatility for Bitcoin and Ethereum. For definitions and additional information regarding these metrics, please refer to the monthly metrics packages available on investors.bullish.com.
About Bullish
Bullish (NYSE: BLSH) is an institutionally focused global digital asset platform that provides regulated market infrastructure and information services. This includes Bullish Exchange – an institutionally focused digital assets spot and derivatives exchange, integrating a high-performance central limit order book matching engine with automated market making to provide deep and predictable liquidity. Bullish Europe is regulated under MiCAR as a crypto asset service provider offering spot trading and custody services for digital assets.
Bullish is the parent company of CoinDesk, a leading provider of digital asset media and information services. CoinDesk's offerings include: CoinDesk Indices – a collection of tradable proprietary and single-asset benchmarks and indices that track the performance of digital assets for global institutions in the digital assets and traditional finance industries; CoinDesk Data – a broad suite of digital asset market data and analytics, providing real-time insights into prices, trends and market dynamics; and CoinDesk Insights – a digital asset media and events provider and operator of coindesk.com, a digital media platform that covers news and insights about digital assets, the underlying markets, policy and blockchain technology.
For more information, please visit bullish.com and follow LinkedIn and X.
Use of Websites to Distribute Material Company Information
We use the Bullish Investor Relations website (investors.bullish.com) and our X account (x.com/bullish) to publicize information relevant to investors, including information that may be deemed material, in addition to filings we make with the U.S. Securities and Exchange Commission (SEC) and press releases. We encourage investors to regularly review the information posted on our website and X account in addition to our SEC filings and press releases to be informed of the latest developments.
Contacts
Media: media@bullish.com
Investor Relations: investors@bullish.com
Source: Bullish
Exhibit 99.2
Bullish
Monthly Metrics Report for September 2026
(Unaudited)
| 2025 |
| 2026 |
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| Jan |
| Feb |
| Mar |
| Apr |
| May |
| Jun |
| Jul |
| Aug |
| Sep |
| Oct |
| Nov |
| Dec |
| Jan |
| Feb |
| Mar |
| Apr |
| May |
| June |
| July |
| Aug |
| Sep |
(B - in billions) |
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Trading Volume ($B) |
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Spot - BTC | 34.6 |
| 30.9 |
| 43.2 |
| 39.2 |
| 32.8 |
| 19.9 |
| 20.8 |
| 18.2 |
| 16.4 |
| 38.2 |
| 38.4 |
| 25.9 |
| 22.5 |
| 41.8 |
| 29.1 |
| 20.9 |
| 16.8 |
| 26.9 |
| 16.7 |
| 17.6 |
| 19.9 |
Spot - ETH | 18.3 |
| 19.2 |
| 14.9 |
| 10.9 |
| 12.0 |
| 9.5 |
| 11.1 |
| 12.8 |
| 8.8 |
| 15.1 |
| 14.1 |
| 9.6 |
| 8.4 |
| 12.9 |
| 8.0 |
| 5.4 |
| 3.4 |
| 4.9 |
| 3.0 |
| 3.7 |
| 4.5 |
Spot - Stablecoin | 19.4 |
| 20.9 |
| 17.0 |
| 13.3 |
| 10.3 |
| 8.1 |
| 12.9 |
| 8.6 |
| 8.1 |
| 19.6 |
| 18.4 |
| 13.8 |
| 11.2 |
| 19.0 |
| 13.2 |
| 9.6 |
| 7.4 |
| 10.8 |
| 7.3 |
| 7.9 |
| 9.5 |
Spot - Other | 4.8 |
| 3.8 |
| 2.7 |
| 2.2 |
| 2.6 |
| 2.4 |
| 4.0 |
| 4.6 |
| 4.1 |
| 4.6 |
| 4.4 |
| 2.9 |
| 3.4 |
| 3.7 |
| 2.7 |
| 2.1 |
| 2.5 |
| 2.9 |
| 2.2 |
| 6.6 |
| 8.4 |
Total Spot | 77.1 |
| 74.8 |
| 77.7 |
| 65.5 |
| 57.6 |
| 39.9 |
| 48.8 |
| 44.3 |
| 37.3 |
| 77.5 |
| 75.3 |
| 52.2 |
| 45.4 |
| 77.4 |
| 52.9 |
| 38.0 |
| 30.0 |
| 45.5 |
| 29.1 |
| 35.8 |
| 42.2 |
Options |
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| 0.0 |
| 0.0 |
| 0.0 |
| 2.8 |
| 6.2 |
| 4.8 |
| 3.6 |
| 3.2 |
| 5.6 |
| 0.9 |
| 2.3 |
| 0.2 |
| 4.7 |
| 4.1 |
Perpetual | 6.6 |
| 7.8 |
| 8.0 |
| 6.8 |
| 5.8 |
| 4.1 |
| 5.0 |
| 4.6 |
| 2.2 |
| 3.0 |
| 2.7 |
| 2.6 |
| 2.0 |
| 3.1 |
| 4.4 |
| 3.4 |
| 2.0 |
| 3.1 |
| 1.5 |
| 2.0 |
| 2.3 |
Total Trading Volume | 83.7 |
| 82.5 |
| 85.7 |
| 72.3 |
| 63.4 |
| 44.0 |
| 53.8 |
| 48.8 |
| 39.6 |
| 80.5 |
| 80.8 |
| 61.1 |
| 52.2 |
| 84.1 |
| 60.4 |
| 46.9 |
| 32.9 |
| 50.9 |
| 30.7 |
| 42.5 |
| 48.6 |
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Average Trading Spread (bps) |
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Spot | 2.14 |
| 1.97 |
| 1.87 |
| 1.65 |
| 1.55 |
| 1.58 |
| 1.76 |
| 2.55 |
| 1.96 |
| 1.75 |
| 1.94 |
| 1.82 |
| 1.74 |
| 2.22 |
| 2.01 |
| 2.05 |
| 2.40 |
| 2.84 |
| 2.71 |
| 2.53 |
| 2.41 |
Options |
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| 1.00 |
| 0.93 |
| 1.29 |
| 1.34 |
| 1.66 |
| 1.95 |
| 2.42 |
| 1.86 |
| 2.50 |
| 1.65 |
| 0.59 |
| 1.09 |
| 0.14 |
| 0.40 |
Perpetual | (1.06) |
| (1.41) |
| (2.38) |
| (1.47) |
| (0.86) |
| (1.22) |
| (0.80) |
| (0.65) |
| 0.21 |
| (2.67) |
| (0.13) |
| (0.30) |
| (0.61) |
| 0.37 |
| 0.09 |
| (0.08) |
| (0.12) |
| (0.14) |
| 1.21 |
| (0.32) |
| 0.38 |
Average Trading Spread | 1.90 |
| 1.65 |
| 1.47 |
| 1.36 |
| 1.32 |
| 1.32 |
| 1.52 |
| 2.25 |
| 1.86 |
| 1.59 |
| 1.85 |
| 1.71 |
| 1.67 |
| 2.16 |
| 1.86 |
| 1.95 |
| 2.23 |
| 2.56 |
| 2.62 |
| 2.13 |
| 2.14 |
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Monthly Average Volatility |
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BTC | 48% |
| 44% |
| 50% |
| 44% |
| 33% |
| 28% |
| 27% |
| 28% |
| 23% |
| 38% |
| 45% |
| 39% |
| 33% |
| 61% |
| 48% |
| 35% |
| 28% |
| 47% |
| 32% |
| 30% |
| 32% |
ETH | 60% |
| 78% |
| 69% |
| 70% |
| 67% |
| 54% |
| 54% |
| 60% |
| 42% |
| 58% |
| 68% |
| 53% |
| 46% |
| 82% |
| 60% |
| 44% |
| 36% |
| 67% |
| 44% |
| 39% |
| 42% |
**Figures may not sum due to rounding
Additional Information & Disclosures
This monthly metrics package provides certain limited purpose monthly performance results of Bullish. This information is presented without commentary and should be read together with our most recent quarterly and annual results and our filings with the U.S. Securities and Exchange Commission (SEC), which are available on our Investor Relations website at investors.bullish.com.
The information provided is unaudited and the information for the months in the most recent fiscal quarter is preliminary, based on our estimates and subject to completion of our financial closing procedures. Final results for the quarter, as reported in our SEC filings, might vary from the information provided in this monthly metrics package.
Bullish expects to release monthly metrics packages for the prior month’s performance after the end of each month.
We use our Investor Relations website (investors.bullish.com) and our X account (x.com/bullish) to publicize information relevant to investors, including information that may be deemed material, in addition to filings we make with the SEC and press releases. We encourage investors to regularly review the information posted on our website and X account in addition to our SEC filings and press releases to be informed of the latest developments.
Definitions
Trading Volume represents the notional value of trades, i.e. the product of the quantity of assets transacted and the trade price at the time the transaction was executed. The quantity represents the total U.S. dollar equivalent value of matched trades transacted between a buyer and seller through our platform during the period of measurement.
Average Trading Spread represents total commissions earned from transactions on the Bullish Exchange for the period, expressed as a percentage of the trading volume for the period. Management reviews this metric, which reflects the cost of trading on the Bullish Exchange, changes in fair value of perpetual futures, and rebates, for insight into the average revenue generated per unit of trading volume on our platform.
Volatility is calculated using 1-minute price intervals from CoinDesk Data's Adaptive Diversified Liquidity Index for BTC and ETH. We determine the daily volatility by measuring the standard deviation of these minute-by-minute price changes, which provides a more granular view of price fluctuations. This daily figure is then converted to an annualized volatility by multiplying it by the square root of 365, a standard practice for making risk metrics comparable over a one-year period.