CACI is down roughly 3.2% in Tuesday trading (May 5, 2026), with the tape pointing to a post-earnings valuation reset rather than a single incremental headline. Investors are focusing on the near-term earnings and cash-flow “friction” from acquisition financing and integration, even as management highlighted solid operating performance and raised parts of its fiscal-2026 outlook following the ARKA transaction. (fool.com)

The ARKA acquisition is large enough to change the market’s risk framing: CACI has been absorbing transaction and integration costs, and management called out higher interest expense as part of the earnings bridge. With leverage elevated post-deal, investors are treating the story as “show-me” on deleveraging and free-cash-flow conversion over the next few quarters, which is pressuring the multiple when the broader market is already sensitive to rates and funding costs. (fool.com)

Adding to the cautious tone, CACI’s quarterly awards were softer versus the year-ago period even though management emphasized positioning and backlog strength. For government-services stocks, any hint of a slower award environment can quickly become a trading catalyst, particularly after a strong prior run where expectations were elevated. (stocktitan.net)

The move is also landing during an active news window for defense IT services, with peers releasing updates that can drive sympathy trading and factor rotations across the group. In that environment, investors often take profits in names viewed as having near-term financing/integration noise, even when fundamental demand signals remain constructive. (m.investing.com)