The spot Bitcoin ETFs managed to turn the tables for the year as the net flows finally turned green, but there are some concerning signs.Meanwhile, the funds tracking the largest altcoin ended the previous week in the red. This became the second such week out of the last three.BTC ETFs Green, But There’s a CatchRecall that the spot BTC ETFs had their best five-day trading performance in nearly a year during the last full week of September when they attracted roughly $2.4 billion in net inflows. This helped flip the YTD numbers green, which was difficult to imagine just a few months ago when the funds bled out heavily, with $2.43 billion leaving in May and a whopping net withdrawal of $4.5 billion in June.September 28 began with another $31.07 million in net inflows, followed by $66.19 million on Tuesday. The tables turned on Wednesday as investors pulled out $148.69 million. This was rather surprising since the PCE data came out on that day and showed that inflation was lower than expected.Nevertheless, the net inflows returned on Thursday with $102.67 million, according to SoSoValue. FarSide shows that another $31.7 million entered the financial vehicles on Friday, ending the week at around $83 million. This makes the past four weeks quite interesting and different.$83 million in the past week was not all that impressive, especially when compared to the $2.39 billion a week before. However, that record-setting five-day trading period followed a very modest $6.21 million inflow week. The one before that was even stranger, with $462.73 million leaving the funds.Spot Bitcoin ETFs Net Flows. Source: SoSoValueETH ETFs in the Red AgainThe spot Ethereum ETFs also started the business week on the right foot, but their momentum quickly faded. After the $17.10 million in net inflows on Monday, withdrawals took charge with $2.81 million on Tuesday, $59.58 million on Wednesday, $55.37 million on Thursday, and another $17.3 million on Friday.Consequently, the week ended with net outflows of approximately $114 million. The concerning part is that this is the second such week out of the last three, in which withdrawals have dominated. The positive side is that the one that was in the green saw notable net inflows of almost $690 million.Still, the cumulative total net inflows have declined slightly from the recent local peak of $13.94 billion to $13.80 billion.Spot Ethereum ETF Flows. Source: SoSoValue The post Bitcoin and Ethereum ETF Weekly Flows: The Good, the Bad, and the Concerning appeared first on CryptoPotato.