Ranks the 10 SPDR sector ETFs and a cash/short-term Treasury filter by trailing total return every month, holding the top-ranked names equally weighted and shifting to the cash/Treasury filter when sector momentum broadly weakens.

The exact rule, in full, as currently in effect (revision 1, effective Jul 15, 2026):

Universe: 10 SPDR sector ETFs (XLK, XLF, XLE, XLV, XLY, XLP, XLI, XLB, XLU, XLRE) plus a cash/short-term Treasury filter (BIL). On the first trading day of each month, rank all 11 instruments by blended 3/6/12-month trailing total return. Hold the top 3 ranked instruments, equally weighted; any sector ETF that ranks below BIL is replaced by BIL for that month.