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CIK: 0001644956
Total reported value
$33.3B
$33.3B
413 檔
19.4%
At the close of Q1 2026, William Blair Investment Management, LLC disclosed equity holdings valued at approximately $33.3B, spread across 413 reported holdings.
In Q1 2026, William Blair Investment Management, LLC adopted a defensive or profit-taking posture, trimming 110 positions and completely liquidating 27 holdings to manage risk exposure.
Showing top 200 holdings (of 413 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | TSM | Taiwan Semiconductor-sp Adr | Stock-Tech | 6.16% | +0.93% | -7.80% | |
| 2 | NVDA | Nvidia CORP | Stock-Tech | 5.15% | +0.02% | -15.87% | |
| 3 | AAPL | Apple Inc | Stock-Tech | 4.04% | -1.20% | -11.61% | |
| 4 | MSFT | Microsoft CORP | Stock-Tech | 3.54% | -1.24% | -17.00% | |
| 5 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 2.38% | +1.05% | -20.61% | |
| 6 | AVGO | Broadcom Inc | Stock-Tech | 2.25% | +0.09% | -13.21% | |
| 7 | AMZN | Amazon.com Inc | Stock-Consumer Disc | 2.18% | -0.76% | -27.89% | |
| 8 | META | Meta Platforms Inc-class A | Stock-Comm Services | 1.92% | -0.31% | -14.63% | |
| 9 | MA | Mastercard Inc - A | Stock-Financials | 1.75% | -0.33% | -2.24% | |
| 10 | AZN | AstraZeneca PLC | Stock-Healthcare | 1.25% | -0.40% | — | |
| 11 | LIN | Linde plc | Stock-Materials | 1.04% | -0.25% | -1.11% | |
| 12 | CG | Carlyle Group Inc/the | Stock-Financials | 1.01% | -0.26% | -11.65% | |
| 13 | COST | Costco Wholesale CORP | Stock-Consumer Staples | 1.00% | -0.44% | -7.92% | |
| 14 | ITUB | Itau Unibanco H-spon Prf Adr | Stock-Financials | 0.88% | -0.19% | -13.32% | |
| 15 | TWST | Twist Bioscience CORP | Stock-Other | 0.83% | -0.16% | -11.50% | |
| 16 | NOW | Servicenow Inc | Stock-Tech | 0.82% | -0.36% | +10.37% | |
| 17 | PRMB | Primo Brands CORP | Stock-Consumer Staples | 0.81% | +0.03% | +3.40% | |
| 18 | MLI | Mueller Industries Inc | Stock-Industrials | 0.77% | -0.04% | +18.53% | |
| 19 | INTU | Intuit Inc | Stock-Tech | 0.76% | -0.66% | +20.65% | |
| 20 | MNST | Monster Beverage CORP | Stock-Consumer Staples | 0.70% | +0.03% | -21.96% | |
| 21 | AMD | Advanced Micro Devices | Stock-Tech | 0.70% | +0.63% | -22.17% | |
| 22 | BAP | Credicorp Ltd. | Stock-Financials | 0.70% | +0.03% | -18.86% | |
| 23 | A | Agilent Technologies Inc | Stock-Healthcare | 0.68% | -0.17% | -12.95% | |
| 24 | ORLY | O'reilly Automotive Inc | Stock-Consumer Disc | 0.67% | -0.16% | -25.88% | |
| 25 | BWXT | Bwx Technologies Inc | Stock-Industrials | 0.66% | -0.11% | -11.36% | |
| 26 | TRU | Transunion | Stock-Financials | 0.66% | -0.09% | -27.09% | |
| 27 | ONTO | Onto Innovation Inc | Stock-Tech | 0.65% | +0.11% | -44.16% | |
| 28 | IDXX | Idexx Laboratories Inc | Stock-Healthcare | 0.65% | -0.18% | -20.33% | |
| 29 | NXT | Nextpower Inc-cl A | Stock-Tech | 0.65% | -0.41% | +19.06% | |
| 30 | ARGX | Argenx Se - Adr | Stock-Healthcare | 0.64% | +0.10% | +18.96% | |
| 31 | CAVA | Cava Group Inc | Stock-Consumer Disc | 0.64% | -0.37% | -1.04% | |
| 32 | LSCC | Lattice Semiconductor CORP | Stock-Tech | 0.63% | -0.10% | -3.84% | |
| 33 | FFIV | F5 Inc | Stock-Tech | 0.62% | +0.11% | +18.12% | |
| 34 | AKAM | Akamai Technologies Inc | Stock-Tech | 0.61% | -0.06% | — | |
| 35 | CCJ | Cameco CORP | Stock-Energy | 0.60% | -0.03% | -15.07% | |
| 36 | UNH | Unitedhealth Group Inc | Stock-Healthcare | 0.60% | +0.05% | -11.67% | |
| 37 | MDGL | Madrigal Pharmaceuticals Inc | Stock-Healthcare | 0.59% | -0.07% | -3.87% | |
| 38 | NU | Nu Holdings Ltd. | Stock-Financials | 0.58% | -0.27% | -34.40% | |
| 39 | GMED | Globus Medical Inc - A | Stock-Healthcare | 0.57% | -0.26% | -20.24% | |
| 40 | CHRW | C.h. Robinson Worldwide Inc | Stock-Industrials | 0.57% | -0.02% | +138.09% | |
| 41 | P | Everpure Inc-a | Stock-Tech | 0.56% | +0.26% | -23.02% | |
| 42 | SNOW | Snowflake Inc | Stock-Tech | 0.56% | +0.13% | -16.29% | |
| 43 | TLN | Talen Energy CORP | Stock-Utilities | 0.55% | +0.02% | -7.76% | |
| 44 | LOPE | Grand Canyon Education Inc | Stock-Consumer Staples | 0.55% | -0.10% | +116.21% | |
| 45 | EG | Everest Group, Ltd. | Stock-Financials | 0.55% | -0.03% | -13.37% | |
| 46 | HALO | Halozyme Therapeutics Inc | Stock-Healthcare | 0.54% | +0.05% | +37.06% | |
| 47 | MLM | Martin Marietta Materials | Stock-Materials | 0.53% | -0.21% | +0.81% | |
| 48 | COHR | Coherent CORP | Stock-Tech | 0.53% | -0.53% | EXIT | |
| 49 | CW | Curtiss-wright CORP | Stock-Industrials | 0.52% | +0.20% | -16.47% | |
| 50 | RRX | Regal Rexnord CORP | Stock-Industrials | 0.52% | +0.12% | +10.30% |
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | TSM | Taiwan Semiconductor-sp Adr | +1.1% | -7.80% | Trim |
| 2 | STRL | Sterling Infrastructure Inc | +0.4% | +683.97% | Add |
| 3 | CHRW | C.h. Robinson Worldwide Inc | +0.4% | +138.09% | Add |
| 4 | LOPE | Grand Canyon Education Inc | +0.3% | +116.21% | Add |
| 5 | TIGO | Millicom International Cellular S.A. | +0.3% | +1022.91% | Add |
| 6 | NXT | Nextpower Inc-cl A | +0.3% | +19.06% | Add |
| 7 | TWST | Twist Bioscience CORP | +0.3% | -11.50% | Trim |
| 8 | LIN | Linde plc | +0.3% | -1.11% | Trim |
| 9 | CAVA | Cava Group Inc | +0.2% | -1.04% | Trim |
| 10 | TTE | TotalEnergies SE | +0.2% | +417.82% | Add |
| 11 | FFIV | F5 Inc | +0.2% | +18.12% | Add |
| 12 | PRMB | Primo Brands CORP | +0.2% | +3.40% | Add |
| 13 | RRX | Regal Rexnord CORP | +0.2% | +10.30% | Add |
| 14 | COST | Costco Wholesale CORP | +0.2% | -7.92% | Trim |
| 15 | CLH | Clean Harbors Inc | +0.2% | +30.57% | Add |
| 16 | MLI | Mueller Industries Inc | +0.2% | +18.53% | Add |
| 17 | HALO | Halozyme Therapeutics Inc | +0.2% | +37.06% | Add |
| 18 | LSCC | Lattice Semiconductor CORP | +0.2% | -3.84% | Trim |
| 19 | STEP | Stepstone Group Inc-class A | +0.2% | +185.66% | Add |
| 20 | RS | Reliance Inc | +0.2% | +43.93% | Add |
| 21 | ALHC | Alignment Healthcare Inc | +0.2% | +126.21% | Add |
| 22 | GFI | Gold Fields Ltd-spons Adr | +0.2% | +3891.37% | Add |
| 23 | HLIO | Helios Technologies Inc | +0.1% | +58.51% | Add |
| 24 | LB | Landbridge Co Llc-a | +0.1% | +28.56% | Add |
| 25 | BSY | Bentley Systems Inc-class B | +0.1% | +27.06% | Add |
| 26 | KNX | Knight-swift Transportation | +0.1% | +73.32% | Add |
| 27 | VRSK | Verisk Analytics Inc | +0.1% | +37.03% | Add |
| 28 | MTDR | Matador Resources Co | +0.1% | +49.62% | Add |
| 29 | RYAAY | Ryanair Holdings Plc-sp Adr | +0.1% | +726.15% | Add |
| 30 | IIIV | I3 Verticals Inc-class A | +0.1% | +204.61% | Add |
| 31 | WH | Wyndham Hotels & Resorts Inc | +0.1% | +55.91% | Add |
| 32 | BE | Bloom Energy Corp- A | +0.1% | -8.75% | Trim |
| 33 | MSI | Motorola Solutions Inc | +0.1% | +153.07% | Add |
| 34 | DCI | Donaldson Co Inc | 0% | -5.42% | Trim |
| 35 | LECO | Lincoln Electric Holdings | 0% | -12.29% | Trim |
| 36 | MA | Mastercard Inc - A | 0% | -2.24% | Trim |
| 37 | DBD | Diebold Nixdorf Inc | 0% | -20.86% | Trim |
| 38 | MDGL | Madrigal Pharmaceuticals Inc | 0% | -3.87% | Trim |
| 39 | NOVT | Novanta Inc | 0% | -13.84% | Trim |
| 40 | EG | Everest Group, Ltd. | — | -13.37% | Trim |
| 41 | DT | Dynatrace Inc | — | +0.41% | Add |
| 42 | PSN | Parsons CORP | — | -4.49% | Trim |
| 43 | LAUR | Laureate Education Inc | — | -18.96% | Trim |
| 44 | HQY | Healthequity Inc | 0% | -10.54% | Trim |
| 45 | SN | SharkNinja, Inc. | 0% | -13.18% | Trim |
| 46 | EHC | Encompass Health CORP | 0% | -12.31% | Trim |
| 47 | CPRT | Copart Inc | 0% | -4.18% | Trim |
| 48 | BWIN | Baldwin Insurance Group Inc/ | 0% | -9.93% | Trim |
| 49 | RACE | Ferrari N.V. | 0% | -15.84% | Trim |
| 50 | KWR | Quaker Chemical Corporation | 0% | -17.36% | Trim |
According to official SEC Form 13F filings, William Blair Investment Management, LLC reported a total U.S. public equity portfolio value of $33.3B across 413 disclosed positions in Q1 2026.
Expert Analysis & Guides for Tracking Wall Street Smart Money Movements
Learn how SEC Form 13F filings work, the $100M threshold, 45-day reporting lag, and how to track top hedge fund holdings.
In terms of portfolio concentration, the top 5 core holdings (including TSM, NVDA, AAPL) accounted for 19.4% of total reported equity market value during Q1 2026.
Top New Position Initiated
AZN
市值: $377.3M
Top Position Liquidated / Trimmed
SE
前期市值: $302.4M
During Q1 2026, William Blair Investment Management, LLC's top holdings by market value included TSM (6.2%)、NVDA (5.2%)、AAPL (4.0%). The largest single position, TSM, represented 6.2% of total portfolio value.
In Q1 2026, William Blair Investment Management, LLC made 200 total portfolio adjustments, initiating 32 new buys, adding to 31 positions, trimming 110 holdings, and fully liquidating 27 stocks.
All holding records on this page are fetched directly from the U.S. Securities and Exchange Commission (SEC) EDGAR system (Form 13F-HR). AlphaSMO parses CUSIP identifiers and formats data into Schema.org-compliant datasets.
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