Micron ADR's Attractive Premium Why Has No One Flattened It? Arbitrage Trading Roundtrip Cost "Threshold" Could Be as High as $200,000

August 11th, according to TradingBeats (formerly Hyperinsight) monitoring, the Hynix ADR mapping contract SKHY currently exhibits a roughly 36.06% premium relative to SKHX, which has been maintained for a long time. For the 0x803 address that has already established a price difference position in the tens of millions of dollars, whether the premium eventually returns is no longer the sole variable, and the speed of this return is becoming the deciding factor for profit and loss.

Based on the current funding rate static calculation, for each additional day this trade is held, there is an additional funding cost of approximately $27,500 between the two legs. To cover this expense solely through the convergence of the price difference, the premium of SKHY over SKHX needs to narrow by at least 0.67 percentage points each day.

A snapshot shows that SKHX is currently trading at $1023, while SKHY is trading at $139.19. Calculated based on a ratio of 10 SKHY to 1 SKHX, the current ADR premium is about 36.06%.

This address previously established a nearly neutral scale price difference position: longing 5400 units of SKHX with a position value of about $5.524 million; simultaneously, shorting 40,000 units of SKHY with a position value of about $5.568 million, with a total nominal scale of about $11.092 million across both legs. Its core trading logic is to bet on the high premium SKHY relative to SKHX falling back.

However, this "36% price difference" is not something that can wait indefinitely.

The current SKHX hourly funding rate is approximately +0.01961%, which the address as a long position needs to pay; the SKHY funding rate is about -0.00109%, which as a short position is also on the paying side. The total hourly funding cost of both legs is about $1144, about $27,500 per day, and about $192,200 per week.

If we assume that the SKHX price remains at $1023, then just to earn back one day of funding, SKHY would need to drop from $139.19 to about $138.50, equivalent to a decrease of about 0.49%. The corresponding ADR premium needs to drop from 36.06% to about 35.39%, with at least a disappearance of about 0.67 percentage points in a day.

Even if the price difference is completely realized through SKHX's increase, the result is similar: SKHX needs to rise to about $1028.08, which is approximately 0.50% higher than SKHY in a single day to just cover the funding cost.

If the current fee rate remains stable for 7 days, and assuming that all convergence is done through SKHY, the ADR premium needs to decrease from 36.06% to around 31.36%, resulting in a weekly narrowing of approximately 4.70 percentage points. Even if the convergence is achieved through SKHX's increase, the premium also needs to drop to around 31.49%.

From the perspective of the cost of new capital, this trade has just reached the breakeven point.

The arbitrageur facing this spread trade is not dealing with a fixed "Will 36% eventually return" question: as long as the premium converges by less than about 0.67 percentage points each day, the arbitrage profit may not outpace the new capital cost, and the breakeven point gradually decreases.

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