Eric Balchunas, senior ETF Analyst at Bloomberg Intelligence, posted on X about an unexpected leader in daily fund flows. The John Hancock Core Bond ETF, previously valued at $18 million, experienced a dramatic increase to $2.3 billion, marking a 128-fold jump in assets under management. This significant surge is speculated to be due to its parent company, Manulife, potentially using the ETF to manage insurance cash or incorporating it into a financial model. The sudden increase is unlikely to be a result of natural market forces, but rather a strategic move by the company. Despite the unconventional nature of the asset growth, it highlights the diverse strategies employed in asset management.