A couple of factors seem to have weighed on the infrastructure giant.Units of Brookfield Infrastructure Partners (BIP 0.65%) declined by 12.9% in the first half of 2024, according to data from S&P Global Market Intelligence. That was a steeper decline than its corporate twin, Brookfield Infrastructure Corporation (BIPC 1.85%), which fell only 4.6% in the first half. Both entities significantly underperformed the S&P 500, which rallied 14.5% to start 2024. Here's a look at what weighed on the infrastructure ...