CEA Industries, the Nasdaq-listed company with ticker BNC, was trading at three different prices on Sept. 8 across the stock market, Binance’s perpetual market, and an on-chain tokenized version. As of 4:23 p.m. Taipei time, BNC shares were quoted at $6.24 in premarket trading, Binance’s BNCUSDT U.S. stock perpetual contract was at $6.296, and BNC4 on BSC was at $10.26.
At the same time, the funding rate on Binance’s contract reached 2% at the 4 p.m. settlement, the platform’s stated ceiling for the product. Using the article’s calculation method, that works out to 2,190% on an annualized basis.
Funding swung from negative to the cap in one settlement cycle
The previous settlement came at 8 a.m. Taipei time, when the rate was still -0.0857%, meaning long positions were being paid. Eight hours later, it had jumped to positive 2%.
The contract settles every eight hours, or three times a day. In the source article’s framing, if the rate stays pinned at the cap, traders holding longs would pay 6% of principal per day in funding alone, regardless of whether the market moves up or down.
Over the prior 24 hours, the contract rose from $3.927 to an intraday high of $6.796, then eased back to $6.296 by 4:23 p.m. Taipei time, still up 60.33%. Turnover during that span reached $78.39 million across 344,700 trades, with open interest at 2.487 million contracts. Binance’s mark price was $6.42, 1.89% above the index price of $6.3.
Positioning flipped while longs paid the highest funding rate
The same report said positioning changed sharply over that period. Binance’s top trader long-short ratio stood at 2.4363 at 6:20 a.m. Taipei time, showing longs outnumbering shorts by more than two to one. By 4 p.m., that ratio had fallen to 0.94.
Across all accounts on the platform, the long-short ratio dropped to 0.46, with 68.06% of accounts on the short side. In other words, while longs were paying 2% every eight hours, large traders had already shifted their exposure the other way.
BNC4 premium was tied to minting limits and no redemption path
The on-chain BNC4 token is the first 4Stock product launched by Four.meme. Its BNC4-USDT pool was created at 9:57 a.m. Taipei time on Sept. 8.
According to Four.meme’s official documentation cited by BlockTempo, each 4Stock token is backed 1:1 by the underlying share, with the platform buying and holding the actual stock through a dedicated managed account. But minting is application-based rather than open and instant. The minimum size is 10,000 USDC, and the platform charges a 1% minting fee. Users send USDC to a designated address, the platform uses those funds to purchase shares, and tokens are issued based on the actual fill quantity.
Redemption is listed in the documentation as coming soon, with the same 10,000 USDC threshold, but it had not opened at the time of publication. That leaves arbitrage working in only one direction: approved minters can receive BNC4 and sell it on-chain, while traders buying the token in the secondary market do not yet have a route to redeem it back into stock.
Three-day U.S. market holiday tightened supply
The article also pointed to the U.S. equity market closure from Sept. 5 through Sept. 7, covering the weekend and Labor Day. During those three days, supply could not be replenished, which widened the disconnect between the tokenized market and the underlying stock.
At one point, BlockTempo said the premium reached 7.93x. When BNC4 moved above $30, the underlying stock was only $4.16 in after-hours trading.
0xShawn said he used the mint-and-sell route for a $230,000 profit
Crypto KOL 0xShawn (@ShawnThread) said he followed that path himself: he applied to mint using the after-hours stock price, received BNC4, then sold it immediately on BNB Chain for a $230,000 profit.
As described in the report, that arbitrage was only available to users able to access the minting process. Traders chasing the on-chain price higher did not have a reverse exit route.
BNC4 remained volatile with thin liquidity
That structure also made it hard for the token to hold its price. BNC4 was quoted at $10.26, up 64% from the stock’s premarket price and up 177% over 24 hours. But in the latest five-minute window cited by the article, it had already fallen 23.53%.
Liquidity in the main pool was just $1.92 million, yet 24-hour volume reached $132.5 million, a turnover ratio of nearly 70 times. The source article said the pool was thin enough that a single sell order could trigger a double-digit drop.
Two questions highlighted in the source article
Why was BNC4 trading far above CEA Industries shares?
BlockTempo attributed that spread to Four.meme’s application-based minting system, the 10,000 USDC minimum, the 1% fee, and the fact that redemption had not launched. The three-day U.S. stock market closure from Sept. 5 to Sept. 7 also kept new supply from coming in, allowing BNC4 at one point to trade at 7.93 times the stock price.
How did the article derive a 2,190% annualized funding rate?
The source said Binance capped the contract’s funding rate at plus or minus 2%, with settlement every eight hours. Using 2% multiplied by three settlements per day and then by 365 days, the article arrived at 2,190%, which it described as a daily 6% funding cost for longs before any price move is counted.