HLSQ ▼ -3.0% - Tessera Defense and Homeland Se $HLSQ - Tessera Defense and Homeland Security Inc. Amends Investment Agreement to Increase Stake in M.E.A. Testing Systems Tessera Defense and Homeland Security amended its investment agreement to increase its stake in M.E.A. Testing Systems, but the stock fell 3.0% today, suggesting investors may have viewed the terms of the increased commitment unfavorably or had concerns about the capital allocation decision. 16-SEP-2026 09:08 AM ET