Active bond mutual funds, which manage trillions in assets, are being monitored for vulnerability to rising interest rates despite their historical resilience against passive investment trends. Market observers are tracking major funds like PIMIX for signs of price declines that could trigger investor redemptions. A potential feedback loop exists where fund outflows force bond selling, pushing rates higher and reducing net asset values, which in turn spurs additional withdrawals. While no immediate distress is evident, the sector remains sensitive to rate movements that previously caused significant capital flight.