A note on tracking error: In October 2022, we switched from using SCHO ETF (1-3yr govt bonds) for excess cash management to a laddered T-Bill portfolio. The KFA MLM Index we track assumes a cash return of 30-day T-Bills on 100% of the assets. For the ETF, typically 15%-20% of assets are at the futures broker earning interest, but earn less than the 30-day T-Bill. The remaining 80%-85% of excess cash is at the custodian invested in a laddered T-Bill portfolio with maturities up to 1yr (prior to October 2022 it was SCHO). Assuming a normal yield curve, having maturities out further on curve helps make up difference to the broker’s level of paid interest. Most of the slippage from 2022 is attributable to the cash investment in SCHO plus typical fees. There was some additional drag on the cash piece in 2023 with rising rates and the inverted yield curve, but far smaller relative to the effect SCHO had in 2022.
原來下面就有講
,只係佢哋之前係用一至三年國債去track index嘅 30 days tbill,結果因為Inverted yield curve搞到咁大tracking error, 睇返過去一年個Tracking error又真係符合返個成本