Red September looms 🩸

Bitcoin typically sinks in September before rebounding in October. Will history repeat itself again this year?

Author

Andrew Hayward
August 30, 2025

đź“ť What you need to know

Bitcoin traders are bracing for "Red September," a phenomenon where crypto typically tanks in September just like the broader stock market has done since 1928. Bitcoin's averaged a 3.77% drop each September since 2013, which is worse than the S&P 500's track record.

The whole thing seems to be part psychology, part structural market forces. Mutual funds rebalance, traders return from summer vacation, and the Fed meets—all creating selling pressure. When traditional markets drop, Bitcoin often gets dumped first as institutions scramble to meet margin calls.

This year feels different though. We've got geopolitical chaos, inflation still being stubborn, and Bitcoin trading below key support levels around $110K. Some analysts think the fundamentals are stronger now with institutional adoption, while others see a perfect storm brewing.

The irony? Part of this might just be a self-fulfilling prophecy—everyone expects September to be bad news, so they sell and prices drop. But the good news is that October, a.k.a. “Uptober,” is historically Bitcoin's best month.

'Red September' Is Coming—Here's What to Expect From the Bitcoin Market

Bitcoin has dropped an average of 3.77% in price each September since 2013. Should traders expect another seasonal selloff?

Is AI the Future of Ethereum? The Network's Developers Are Banking on It

A new proposal from Ethereum and Google developers seeks to make the blockchain the bedrock of the AI agent economy.

Why Eric Trump Thinks Bitcoin Will Hit $1 Million

Eric Trump, son of U.S. President Donald Trump, shared why there's "no question" to him that Bitcoin will rise to a price of $1 million.

Eliza Labs Sues X, Accuses Elon Musk’s Platform of Copying AI and Cutting Them Off

The lawsuit claims that Elon Musk's X used Eliza Labs' data, then launched near-identical AI agents via xAI.

đź“Š Myriad Market of the Day

ETH to hit $5K in 2025?

Trade "ETH to hit $5K in 2025?" on Myriad

đź’¬ Quote of the Day

âťť

"Red September has gone from market anomaly to monthly psychology experiment. We're watching an entire market talk itself into a selloff based on history rather than current fundamentals."

FinchTrade’s Yuri Berg on the “Red September” Bitcoin phenomenon

🥇 Be First to Market With Myriad

Join the Myriad Markets Telegram to see the latest prediction markets the second they drop!

With Myriad, the on-chain prediction market launched by Decrypt’s parent company DASTAN, you can break the news and stake the news, using USDC and points.

🕵🏻‍♀️ Editor’s Picks

There Are Now More Than 90 Crypto ETFs Pending SEC Approval, Led by XRP and Solana

After flashing a green light for Bitcoin and Ethereum products, the SEC is facing a growing pile of applications for crypto ETFs.

Bitcoin Whale Sitting on $5 Billion Dumps More BTC to Buy Ethereum

A wealthy Bitcoin holder is exchanging some of their long-held gains for Ethereum, swapping $216 million worth of BTC for ETH on Friday.

US and Dutch Authorities Take Down Crypto-Fueled Fake ID Marketplace

The fake ID marketplace VerifTools allegedly sold fake documents for as little as $9 in cryptocurrency, authorities said.

đź“š Watch and Learn

📹️ WATCH: Luca Netz Talks Playbook for Pudgy Penguins, $Pengu in Bull Market, Abstract TGE, and more...

Igloo Inc. CEO Luca Netz discussed how Pudgy Penguins aims to grow its brand and business and increase its access to capital amid the bull market in 2025. He touched upon several trends in Web3, including crypto treasury firms, tokenized stocks and the resurgence in sports and other big-brand partnerships.

🎓️ LEARN: What Is Grok AI? Elon Musk’s Controversial ChatGPT Rival

Built into social media platform X, Grok is Musk’s edgy AI chatbot—real-time, irreverent, and mired in controversy.

Interested in partnering with Decrypt? Find out more here.