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A $283 million short tops Hyperliquid's ether book in the token's best September since 2016

Ether rose 9.76% in the past month, heading for its best September since 2016 against an 8.57% average September loss. Leveraged longs on Hyperliquid pay funding to hold the gain, while the treasury-firm evidence is mostly coins already held.

The Investor · Invest desk

Illustration accompanying A $283 million short tops Hyperliquid's ether book in the token's best September since 2016

What happened

  • ETH open interest on Hyperliquid rose 2.46% to more than $3 billion, displacing BTC from the top position it usually holds on the venue.
  • The largest ETH position on Hyperliquid is a $283 million short that has earned $2.6 million in funding fees as rates stay positive.
  • Market maker Wintermute has deployed $126 million in short positions, including $46.92 million of ETH short open interest.

Compiled by The InvestorSomething wrong?How this is made

Why it matters

  • constraint Hyperliquid holds only a minority of ETH open interest, so its flip past BTC cannot by itself show that positioning across the market has turned.
  • cost Each day the price stalls with funding positive, Hyperliquid's ETH longs keep paying the short side, including the venue's single largest position.
  • exposure A September-sized drop from current levels would take ETH beneath the lowest long liquidity on Hyperliquid, putting the venue's leveraged long book at risk.
  • decision Bitmine's choice of how much of its holding to stake outweighs anything the other treasury firms, holding under 30% of the total together, can do with theirs.

The gap between this September and the average one is 18.33 percentage points [1]. Only 2016, at 13.3%, did better [2]. The harder question is who paid for the move. Cryptopolitan's report, the single source for these figures, credits leveraged traders on Hyperliquid along with spot whales and treasury companies [21][20], and the evidence for each is of different quality.

Start with leverage. Hyperliquid's ETH open interest, above $3 billion [5], is roughly a sixth of the more than $18 billion in ETH open interest the report cites overall [2]. The flip past BTC happened in a minority of the market, and in positions held. In trading, BTC still turns over more than $2.2 billion a day on the venue [7] against ETH's $1.2 billion [6], about 1.8 times as much [3].

The whale book there leans long: more than 65% of whales hold long positions, against a 57% long share in other markets on average [8]. Positive funding means those longs pay the shorts [9]. The largest ETH position on the venue is a short, and its funding take so far is about 0.92% of notional [4]. Wintermute's shorts have collected $402,000 in funding and show unrealized gains [11].

The liquidity map has longs stacked down to $2,500 and shorts up to $2,900 [10]. From the $2,712.51 print on September 29 [4], the $2,500 end is 7.8% below and the $2,900 end 6.9% above [5][6]. Apply the average September loss from here and ETH lands near $2,480 [7], under the bottom of the long liquidity. Sentiment has already cooled to a neutral 55, down from greed a week earlier [13].

The treasury evidence is mostly holdings. Corporate treasuries own 8.49 million ETH [18]. The staking figures imply a supply of about 120 million coins, so treasuries hold roughly 7% of it [9]. Bitmine's more than 6 million coins are over 70% of the treasury total [8]. According to the report, treasury firms are making new purchases [20], but it does not say how much they bought in September. It does supply staking figures: SharpLink Gaming staked 42,072 ETH [17], and Bitmine plans to stake most of its holding [19]. Staking coins already on the balance sheet is not a purchase. Quantified September spot buying comes to one anonymous whale's $31 million, taken from OKX and Binance into self-custody [14], plus accumulation addresses that expanded faster in September and now hold more than 23 million ETH [15].

The price can leave this band either way. If spot buying keeps drawing down exchange reserves [12], the shorts collecting funding get pushed toward the $2,900 end. If sentiment keeps slipping, a move toward $2,500 runs into the long liquidity held by the traders who have been paying them.

I think the September break is real in price and rests on paid-for leverage in positioning. On the treasury side it is mostly one company's inventory, much of it headed for staking [19]. The counter-case is that treasury buying ran larger than the report's numbers show. Disclosed September purchases by treasury firms other than Bitmine, big enough to register against the 8.49 million total [18], would prove that case right and this one wrong.

What to watch

  • Whether Hyperliquid ETH funding turns negative, so the $283 million short starts paying longs instead of collecting from them.
  • Whether ETH's lead in open interest spreads beyond Hyperliquid to the venues holding the other five-sixths of the $18 billion.
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