A 9.27% week driven by one 9.31% day tests a quarterly-reporting reserve policy
Should the treasury trim the reserve back to its policy weight after this week's gain, or keep the full position and absorb the valuation swing into the quarterly report?
The market facts are real; the decision maker is illustrative.
The week and the position
In the week of 18 November 2024, ETH rose 9.27% to close 3,361.20, 17.37% below its 52-week high, with a 15.45% range and 69.7% annualised realised volatility. The gain was concentrated: 21 November added 9.31%, the week's best day, while 19 November fell 3.13%; the largest one-hour move was 4.36%. Dollar volume reached 14.36bn, 2.26 times the prior 12-week average, and 8-hour funding stayed positive, averaging 0.0232%. ETH gained only 0.29% against BTC, and hourly correlation was 0.48. An illustrative treasury holds ETH as a reserve and reports quarterly.
Judgment
The reserve should be rebalanced to its stated policy weight, not trimmed below it and not allowed to grow with the week. A single 9.31% day inside 69.7% realised volatility is a valuation event, not evidence the reserve is under-sized, and a quarter that reports a gain it did not intend to take invites the reverse error next quarter. Keep the position, sell only the excess above the weight, and accept that the quarterly report will show a swing the treasury did not hedge.
What would change it
If the treasury's policy weight is set as a share of a total that grew more slowly than ETH this quarter, the excess sale is the rebalance itself and the trim is complete at that weight. If realised volatility stays near 69.7% into the next quarter, the weight itself should be cut.
What sets this case apart
This is a rebalancing decision for a reporting holder, where the excess above policy is the only sellable amount and the weekly gain is nearly all one day.