Bond ETF inflows match the top S&P 500 funds with the 10-year yield above 5%

The two totals differ by $10 million, and even that gap is rounding ^[19]. IVV's $16.59 billion and SPYM's $8.30 billion add up to $24.89 billion, exactly the bond figure, though the pair is reported at $24.88 billion ^{[2][3][1][18]}.

Inside the bond half, the money is spread unevenly. SGOV's $6.63 billion is about 27% of it ^[5][20]. IUSB, VTEB and MUB took $14.47 billion, about 58%, and buyers kept adding to those three as their prices fell ^[8][21]. The source does not name the fifth bond fund in the top ten. Subtracting the four named funds from $24.89 billion leaves $3.79 billion for it ^{[4][6][7][22]}.

We think the bond half is mainly a duration trade with a tax-exempt tilt, and the T-bill fund at the top of the bond list is the smaller part of it ^[5][7][21]. The counter-case is that SGOV is still the largest single bond line, and if the unnamed fund is also short-dated, the cash-like share rises to about 42% ^[23]. That still leaves most of the money in funds that lost between 2.02% and 3.28% over the month ^[8]. Last week's flows point the same way. TLT, which holds long-dated Treasuries, drew $1.66 billion with its relative strength index near 20, below the oversold mark of 30 ^[9][10].

The stock buyer is paying for growth. At 19 times forward earnings, the S&P 500's earnings yield is 1/19, or about 5.26%, against a 10-year Treasury yield above 5% ^[11][12][24]. That leaves at most about a quarter of a point of extra current yield for owning equities ^[25]. What supports the purchase is that forward earnings per share have risen 27% this year, according to Samsung Securities ^[13]. "What matters most now is that the interest rate problem, which had held back the market's resilient gains, is gradually finding a resolution," said Seo Jung-hoon, head of the global equity team at Samsung Securities ^[14].

If yields stop climbing, the duration buyers collect income and a price recovery together. If inflation comes back, both halves lose. KB Securities pointed to the ISM manufacturing prices index, which came in at 77.9 in September against 72.9 expected ^[15]. Persistent price pressure could revive fears of further Fed tightening and weigh on stocks and bonds at once, according to KB ^[16]. KB analyst Lee Eun-taek described a third path. "The moment when short-term rates rise and long-term rates fall at the same time could be an important warning sign," he said ^[17]. In that case SGOV's yield and TLT's price would both go up ^[5][9].

The duration view is wrong if the next monthly tally shows SGOV and other short-dated funds taking most of the bond money, or if IUSB, VTEB and MUB drop out of the top ten after another month of losses ^[21].