CPTNX Top Holdings & Constituents
CPTNX, offered by American Century, holds 155 reported positions across $460.3M in assets. Its largest holdings are State Street Bank & Trust Co (STBK) (6.11%), U.S. TREASURY (T) (4.15%), and U.S. TREASURY (T) (3.97%). The 5 biggest positions account for 20.70% of reported assets. The table below lists every reported holding with its portfolio weight and market value in US dollars — open any constituent to research its own performance.
| Position | Weight | Market Value |
|---|---|---|
STBK State Street Bank & Trust Co | 6.11% | $28.55M |
T U.S. TREASURY | 4.15% | $19.36M |
T U.S. TREASURY | 3.97% | $18.54M |
T U.S. TREASURY | 3.25% | $15.19M |
T U.S. TREASURY | 3.23% | $15.07M |
Holdings data comes from the latest SEC Form N-PORT-P filing for this fund, covering the reporting period ended Mar 31, 2026. Market values are reported in US dollars, and each weight represents the position's share of reported fund assets. Cash, derivatives, and rounding can mean displayed weights do not total 100%. Funds rebalance and file on a schedule, so this page may not reflect intraday or post-filing changes.