CIK: 0000748054
Total reported value
$194.3B
Reporting period: 2026-03-31 · Number of holdings: 2830
AMERICAN CENTURY COMPANIES INC disclosed 2830 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $194.3B and a quarterly turnover rate of 24.4%.
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American Century Companies INC's disclosed holdings carry a Herfindahl concentration index of 0.009 — mathematically equivalent to about 115 equally-sized positions, well below its 2830 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 4.85), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Trim MSFT
+6.8% -$1.3B
Trim AMZN
-8.8% -$1.1B
Trim NVDA
-3.6% -$1.2B
Trim GOOGL
-7.4% -$883.6M
Trim AAPL
-3.1% -$678.4M
Trim TSLA
-1.4% -$570.0M
American Century is running a narrow pair trade inside a sprawling index-like portfolio: actively adding Microsoft while trimming seven other megacap tech holdings—NVDA, AMZN, GOOGL, AAPL, TSLA, META, MA. This is a tactical capital rotation betting on MSFT's relative safety and AI platform power, not a broad sector reduction.
The fund is pricing a regime shift where AI value consolidates into the enterprise-ecosystem winner (MSFT) and away from high-beta hardware and narrative plays like NVDA and TSLA. The opposing macro thesis is that we are still in the expansionary phase of the innovation cycle, where breadth and beta leadership persist, making early trimming premature.
Extreme diversification (100/100) masks a vulnerability in process: the simultaneous trimming of seven top tech names while buying the eighth reflects a crowded single-name view inside an otherwise passive shell. The risk is that the MoS is gone—this MSFT versus the rest trade has become consensus, and if the view inverts, the diversified base won’t shelter the portfolio from factor drift.
Sourced and summarized by AI from public SEC filings, limited to historical activity. Not investment guidance.
Showing top 200 holdings (of 2830 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | NVDA | Nvidia CORP | Stock-Tech | 5.48% | -0.45% | -3.58% | |
| 2 | AAPL | Apple INC | Stock-Tech | 3.29% | -0.27% | -3.15% | |
| 3 | MSFT | Microsoft CORP | Stock-Tech | 3.08% | -0.60% | +6.79% | |
| 4 | AMZN | Amazon.com INC | Stock-Consumer Disc | 2.60% | -0.49% | -8.77% | |
| 5 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 2.59% | -0.38% | -7.42% | |
| 6 | AVGO | Broadcom INC | Stock-Tech | 1.52% | -0.11% | +2.01% | |
| 7 | META | Meta Platforms Inc-class A | Stock-Comm Services | 1.47% | -0.20% | -0.81% | |
| 8 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 1.39% | -0.16% | -4.37% | |
| 9 | MA | Mastercard INC - A | Stock-Financials | 1.38% | -0.20% | -2.54% | |
| 10 | TSLA | Tesla INC | Stock-Consumer Disc | 1.29% | -0.26% | -1.38% | |
| 11 | TSM | Taiwan Semiconductor-sp Adr | Stock-Tech | 1.10% | — | -5.73% | |
| 12 | NFLX | Netflix INC | Stock-Comm Services | 0.96% | +0.13% | +10.79% | |
| 13 | COST | Costco Wholesale CORP | Stock-Consumer Staples | 0.93% | +0.18% | +3.73% | |
| 14 | LLY | Eli Lilly & Co | Stock-Healthcare | 0.87% | -0.14% | -0.86% | |
| 15 | AMAT | Applied Materials INC | Stock-Tech | 0.62% | +0.15% | -2.34% | |
| 16 | JPM | Jpmorgan Chase & Co | Stock-Financials | 0.57% | — | +0.65% | |
| 17 | ADI | Analog Devices INC | Stock-Tech | 0.52% | — | -4.02% | |
| 18 | ISRG | Intuitive Surgical INC | Stock-Healthcare | 0.50% | -0.10% | +0.29% | |
| 19 | XOM | Exxon Mobil CORP | Stock-Energy | 0.46% | +0.14% | -0.57% | |
| 20 | VRT | Vertiv Holdings Co-a | Stock-Industrials | 0.43% | +0.17% | +4.10% | |
| 21 | HWM | Howmet Aerospace INC | Stock-Industrials | 0.43% | — | -8.91% | |
| 22 | NET | Cloudflare INC - Class A | Stock-Tech | 0.39% | — | +14.27% | |
| 23 | MRSH | Marsh & Mclennan Cos | Stock-Financials | 0.38% | +0.16% | +81.69% | |
| 24 | ABBV | Abbvie INC | Stock-Healthcare | 0.37% | — | -5.62% | |
| 25 | JNJ | Johnson & Johnson | Stock-Healthcare | 0.36% | — | -17.66% | |
| 26 | LRCX | Lam Research CORP | Stock-Tech | 0.36% | +0.14% | +28.98% | |
| 27 | APH | Amphenol Corp-cl A | Stock-Tech | 0.35% | — | -9.01% | |
| 28 | MRK | Merck & Co. INC. | Stock-Healthcare | 0.34% | — | +3.34% | |
| 29 | PLTR | Palantir Technologies Inc-a | Stock-Tech | 0.32% | — | +21.49% | |
| 30 | ALNY | Alnylam Pharmaceuticals INC | Stock-Healthcare | 0.31% | — | +21.36% | |
| 31 | NSC | Norfolk Southern CORP | Stock-Industrials | 0.30% | — | +0.00% | |
| 32 | TJX | Tjx Companies INC | Stock-Consumer Disc | 0.30% | — | +8.49% | |
| 33 | VZ | Verizon Communications INC | Stock-Comm Services | 0.29% | — | -15.36% | |
| 34 | GILD | Gilead Sciences INC | Stock-Healthcare | 0.29% | — | -7.34% | |
| 35 | MU | Micron Technology INC | Stock-Tech | 0.29% | — | +10.03% | |
| 36 | BDX | Becton Dickinson And Co | Stock-Healthcare | 0.28% | — | +8.83% | |
| 37 | GEV | GE Vernova INC | Stock-Industrials | 0.26% | +0.08% | +6.28% | |
| 38 | MDT | Medtronic plc | Stock-Healthcare | 0.25% | — | +13.39% | |
| 39 | ORCL | Oracle CORP | Stock-Tech | 0.25% | -0.17% | -24.23% | |
| 40 | ASML | ASML Holding N.V. | Stock-Tech | 0.24% | +0.09% | +33.31% | |
| 41 | WMB | Williams Cos INC | Stock-Energy | 0.24% | — | -5.54% | |
| 42 | CAT | Caterpillar INC | Stock-Industrials | 0.24% | — | +2.61% | |
| 43 | AVUS | Avantis U.s. Equity ETF | ETF-Other | 0.24% | — | +8.73% | |
| 44 | DDOG | Datadog INC - Class A | Stock-Tech | 0.23% | — | +4.27% | |
| 45 | BKR | Baker Hughes Co | Stock-Energy | 0.23% | — | -13.67% | |
| 46 | PKG | Packaging CORP Of America | Stock-Consumer Disc | 0.23% | — | -4.17% | |
| 47 | CVX | Chevron CORP | Stock-Energy | 0.22% | — | -7.07% | |
| 48 | REGN | Regeneron Pharmaceuticals | Stock-Healthcare | 0.22% | — | +1.92% | |
| 49 | WMT | Walmart INC | Stock-Consumer Staples | 0.22% | — | -5.05% | |
| 50 | DUK | Duke Energy CORP | Stock-Utilities | 0.22% | — | +5.58% |
Performance for Q3 2026
+3.2%
Performance Last 4 Quarters
+20.8%
Based on 74% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 2830 | $194.3B | 24 | |
| 2025-12-31 | 2811 | $199.0B | 20 | |
| 2025-09-30 | 2779 | $196.5B | 38 | |
| 2025-06-30 | 2847 | $184.1B | 0 | |
| 2025-03-31 | 2881 | $163.0B | 100 | |
| 2024-12-31 | 2882 | $174.1B | 0 | |
| 2024-09-30 | 2878 | $172.1B | 0 | |
| 2024-06-30 | 2878 | $163.4B | 0 | |
| 2024-03-31 | 2924 | $159.1B | 0 | |
| 2023-12-31 | 2875 | $145.5B | 0 | |
| 2023-09-30 | 2807 | $127.9B | 0 | |
| 2023-06-30 | 2788 | $132.6B | 0 | |
| 2023-03-31 | 2667 | $126.9B | 0 | |
| 2022-12-31 | 2577 | $122.4B | 0 | |
| 2022-09-30 | 2433 | $113.6B | 0 | |
| 2022-06-30 | 2304 | $122.3B | 0 | |
| 2022-03-31 | 2278 | $146.3B | 0 | |
| 2021-12-31 | 2307 | $157.7B | 0 | |
| 2021-09-30 | 2285 | $146.1B | 0 | |
| 2021-06-30 | 2278 | $146.6B | 96 | |
| 2021-03-31 | 2193 | $136.1B | 22 | |
| 2020-12-31 | 1954 | $128.3B | 28 | |
| 2020-09-30 | 1800 | $112.8B | 19 | |
| 2020-06-30 | 1714 | $105.5B | 36 | |
| 2020-03-31 | 1603 | $83.9B | 36 | |
| 2019-12-31 | 1492 | $105.1B | 26 | |
| 2019-09-30 | 1203 | $99.6B | 23 | |
| 2019-06-30 | 1260 | $100.5B | 21 | |
| 2019-03-31 | 1213 | $98.7B | 100 | |
| 2018-12-31 | 1226 | $87.5B | 0 | |
| 2018-09-30 | 1251 | $102.6B | 24 | |
| 2018-06-30 | 1280 | $99.3B | 24 | |
| 2018-03-31 | 1237 | $98.4B | 22 | |
| 2017-12-31 | 1261 | $100.4B | 23 | |
| 2017-09-30 | 1305 | $98.8B | 21 | |
| 2017-06-30 | 1321 | $96.7B | 22 | |
| 2017-03-31 | 1306 | $96.3B | 23 | |
| 2016-12-31 | 1313 | $92.8B | 24 | |
| 2016-09-30 | 1320 | $91.0B | 25 | |
| 2016-06-30 | 1324 | $87.9B | 26 | |
| 2016-03-31 | 1289 | $85.7B | 27 | |
| 2015-12-31 | 1290 | $85.3B | 31 | |
| 2015-09-30 | 1331 | $81.9B | 27 | |
| 2015-06-30 | 1330 | $88.9B | 24 | |
| 2015-03-31 | 1349 | $89.6B | 24 | |
| 2014-12-31 | 1389 | $88.7B | 34 | |
| 2014-09-30 | 1393 | $85.7B | 24 | |
| 2014-06-30 | 1432 | $87.7B | 28 | |
| 2014-03-31 | 1434 | $84.6B | 27 | |
| 2013-12-31 | 1429 | $84.9B | 27 | |
| 2013-09-30 | 1438 | $79.8B | 26 | |
| 2013-06-30 | 1414 | $75.7B | 0 |
American Century Companies INC's most significant position changes for 2026-03-31: New buy: AstraZeneca PLC (AZN); Sold out: Astrazeneca Plc-spons Adr (AZNN); Sold out: ICON Public Limited Company (ICLR); Sold out: New Gold INC (NGDN); Add: Microsoft CORP (MSFT) — shares +6.79%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | COST | Costco Wholesale CORP | +0.2% | +3.73% | Add |
| 2 | VRT | Vertiv Holdings Co-a | +0.2% | +4.10% | Add |
| 3 | MRSH | Marsh & Mclennan Cos | +0.2% | +81.69% | Add |
| 4 | AMAT | Applied Materials INC | +0.2% | -2.34% | Trim |
| 5 | LRCX | Lam Research CORP | +0.1% | +28.98% | Add |
| 6 | XOM | Exxon Mobil CORP | +0.1% | -0.57% | Trim |
| 7 | NFLX | Netflix INC | +0.1% | +10.79% | Add |
| 8 | HON | Honeywell International INC | +0.1% | +352.98% | Add |
| 9 | SM | Sm Energy Co | +0.1% | +88.37% | Add |
| 10 | ASML | ASML Holding N.V. | +0.1% | +33.31% | Add |
| 11 | OC | Owens Corning | +0.1% | +549.51% | Add |
| 12 | PWR | Quanta Services INC | +0.1% | +208.81% | Add |
| 13 | FN | Fabrinet | +0.1% | +179.85% | Add |
| 14 | PL | Planet Labs Pbc | +0.1% | +7134.28% | Add |
| 15 | TGT | Target CORP | +0.1% | +67.71% | Add |
| 16 | CDE | Coeur Mining INC | +0.1% | +586.09% | Add |
| 17 | GEV | GE Vernova INC | +0.1% | +6.28% | Add |
| 18 | CIEN | Ciena CORP | +0.1% | +112.00% | Add |
| 19 | MUR | Murphy Oil CORP | +0.1% | +59.91% | Add |
| 20 | BABA | Alibaba Group Holding-sp Adr | -0.1% | -17.00% | Trim |
| 21 | EL | Estee Lauder Companies-cl A | -0.1% | -52.38% | Trim |
| 22 | DT | Dynatrace INC | -0.1% | -35.66% | Trim |
| 23 | BKNG | Booking Holdings INC | -0.1% | -27.77% | Trim |
| 24 | ISRG | Intuitive Surgical INC | -0.1% | +0.29% | Add |
| 25 | ZS | Zscaler INC | -0.1% | -0.72% | Trim |
| 26 | SNOW | Snowflake INC | -0.1% | -1.86% | Trim |
| 27 | AVGO | Broadcom INC | -0.1% | +2.01% | Add |
| 28 | GPK | Graphic Packaging Holding Co | -0.1% | -59.45% | Trim |
| 29 | SPGI | S&p Global INC | -0.1% | -42.16% | Trim |
| 30 | ARES | Ares Management CORP - A | -0.1% | -69.48% | Trim |
| 31 | LLY | Eli Lilly & Co | -0.1% | -0.86% | Trim |
| 32 | APP | Applovin Corp-class A | -0.1% | -0.90% | Trim |
| 33 | BSX | Boston Scientific CORP | -0.1% | -43.12% | Trim |
| 34 | CRM | Salesforce INC | -0.2% | -57.67% | Trim |
| 35 | KVUE | Kenvue INC | -0.2% | -64.32% | Trim |
| 36 | GOOG | Alphabet Inc-cl C | -0.2% | -4.37% | Trim |
| 37 | FICO | Fair Isaac CORP | -0.2% | -26.32% | Trim |
| 38 | ORCL | Oracle CORP | -0.2% | -24.23% | Trim |
| 39 | META | Meta Platforms Inc-class A | -0.2% | -0.81% | Trim |
| 40 | MA | Mastercard INC - A | -0.2% | -2.54% | Trim |
| 41 | TSLA | Tesla INC | -0.3% | -1.38% | Trim |
| 42 | AAPL | Apple INC | -0.3% | -3.15% | Trim |
| 43 | GOOGL | Alphabet Inc-cl A | -0.4% | -7.42% | Trim |
| 44 | NVDA | Nvidia CORP | -0.5% | -3.58% | Trim |
| 45 | AMZN | Amazon.com INC | -0.5% | -8.77% | Trim |
| 46 | MSFT | Microsoft CORP | -0.6% | +6.79% | Add |
| 47 | AZN | AstraZeneca PLC | — | NEW | New buy |
| 48 | AZNN | Astrazeneca Plc-spons Adr | — | EXIT | Sold out |
| 49 | ICLR | ICON Public Limited Company | — | EXIT | Sold out |
| 50 | NGDN | New Gold INC | — | EXIT | Sold out |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-15 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-13 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-12 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-12 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-13 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-11 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-12 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-07 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-14 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-13 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-30 | Amendment | View on EDGAR |
| 2023-09-30 | 2023-11-13 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-14 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-05-11 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-13 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-14 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-12 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-11 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-07 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-10 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-08-05 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-14 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-12 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-11-13 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-08-13 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-05-14 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-12 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-11-13 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-08-14 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-05-14 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-03-06 | Amendment | View on EDGAR |
| 2018-12-31 | 2019-02-13 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-11-02 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-08-08 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-05-03 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-02-02 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-11-01 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-08-07 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-05-02 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-02-03 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-11-01 | 13F-HR | View on EDGAR |
| 2016-06-30 | 2016-08-16 | Amendment | View on EDGAR |
| 2016-06-30 | 2016-08-16 | Amendment | View on EDGAR |
| 2016-06-30 | 2016-07-26 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-05-02 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-02-01 | 13F-HR | View on EDGAR |
| 2015-09-30 | 2015-11-02 | 13F-HR | View on EDGAR |
| 2015-06-30 | 2015-07-28 | 13F-HR | View on EDGAR |
| 2015-03-31 | 2015-05-06 | 13F-HR | View on EDGAR |
| 2014-12-31 | 2015-01-27 | 13F-HR | View on EDGAR |
| 2014-09-30 | 2014-11-07 | 13F-HR | View on EDGAR |
| 2014-06-30 | 2014-08-04 | 13F-HR | View on EDGAR |
| 2014-03-31 | 2014-05-05 | 13F-HR | View on EDGAR |
| 2013-12-31 | 2014-02-06 | 13F-HR | View on EDGAR |
| 2013-09-30 | 2013-10-30 | 13F-HR | View on EDGAR |
| 2013-06-30 | 2013-07-23 | 13F-HR | View on EDGAR |
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