Bitcoin spot exchange-traded funds (ETFs) saw net inflows of $2.386 billion last week, posting the biggest weekly inflow in a year.

On Sept. 28 (local time), blockchain media outlet CoinPost reported that inflows were concentrated in BlackRock’s IBIT and Fidelity’s FBTC. IBIT recorded weekly net inflows of $1.158 billion, accounting for nearly half of the total. Cumulative net inflows since listing rose to $65.28 billion.

FBTC posted net inflows of $702 million over the same period, and cumulative net inflows reached $11.06 billion. The two products together drew $1.86 billion in weekly net inflows, accounting for about 78 percent of the total.

By contrast, WisdomTree’s BTCW saw $4.0161 million flow out, the largest net outflow. On a cumulative basis, it maintained net inflows of $78.65 million.

Even as total inflows increased, fund-by-fund flows diverged. The record can be seen as driven by a few large products rather than broad-based inflows across all ETFs.

Total net assets across bitcoin spot ETFs were tallied at $108.42 billion as of Sept. 25. That equals 6.43 percent of bitcoin’s market capitalisation. Cumulative net inflows since listing stood at $57.55 billion.

Net inflows are calculated by subtracting redemptions from new ETF creations, showing how much investor money entered or left during the period. The figure is an indicator of fund flows by investors including institutions, but it cannot by itself separate institutional and retail shares.

The key question is whether the latest inflows will remain a temporary concentration of funds or 이어질지 sustained buying. If IBIT and FBTC keep attracting inflows and money spreads to other ETFs, it could lend weight to the view that broader investment demand for bitcoin spot ETFs is recovering. If inflows into the two products decline, total net inflows could slow sharply, underscoring the need to track product-level flows as well as the overall figure.