Scenario: XRP has already slipped under 1.30 and the Fed is Wednesday.

[Current events] Say you see XRP at 1.2938 on MEXC this morning, decide the 1.30 area is "support", and open a long at the 300x that the contract header allows. A 0.33% move against you, about 0.0043, is enough to wipe out that margin before fees and maintenance margin. XRP moved more than eight times that much in the last 24 hours.

The image is MEXC's live XRPUSDT perpetual page at about 10:28 AM ET: last 1.2938 (-0.44%), index 1.2939, fair price 1.2938, funding +0.0100% with 1:31:24 left, 24h high 1.3105, 24h low 1.2725, 24h volume 176.516M XRP and 228.202M USDT turnover. The 15 minute chart marks the 1.2725 low from earlier in the session.

What happened

CoinDesk reported XRP fell about 3% to 1.28 during Monday's Asian session as crypto traders de-risked ahead of Wednesday's Fed decision. BTC slipped under 80,000, ETH fell to just above 2,300, SOL barely held 100 and DOGE lost 1-2%. A weekend preview from Crypto.com had XRP pressing 1.30 support after testing it on Thursday. At capture, MEXC's last price was 0.0062 under 1.30, about 0.48%.

The numbers, side by side

• 24h range on MEXC: 1.2725 to 1.3105, which is 0.0380 or 2.99% of the low
• Distance from 1.2938 to the 24h low: 0.0213, which is 1.65%
• Rough 300x long liquidation from 1.2938: 1.2938 x (1 - 1/300) = about 1.2895
• Leverage at which the rough liquidation equals the 24h low: 1 / 0.0165 = about 61x
• Funding: +0.0100% per 8h, so 1,000 XRP long (1,293.80 USDT notional) pays about 0.13 USDT per settlement

So any long opened at 1.2938 with more than about 61x would not have survived a repeat of today's low, and the real cutoff is lower once maintenance margin is counted.

The week's calendar, in order

• Wed Oct 28: Fed decision and Warsh press conference (a hold is widely expected; a December hike is the question). Alphabet and Microsoft report after the close.
• Thu Oct 29: ECB decision, Amazon earnings
• Fri Oct 30: BoJ decision; monthly BTC options expiry at 08:00 UTC (4:00 AM ET), roughly 11.7 to 12.2 billion dollars depending on the tracker

Each one is a chance for BTC to move, and XRP has been moving with BTC on the way down.

Fair price, not last price

MEXC shows a fair price next to the index, and that is the price liquidation is checked against. At capture all three were within 0.0001 of each other. On a fast Fed-day wick, last price can spike while fair price lags, so a wick alone may not liquidate you, but a sustained move will.

Try it yourself: open the XRPUSDT page, read the 24h low, and divide its distance from the current price by the price. Then 1 over that number is the most leverage that would have survived today. Compare that with what you actually use.