13F Notebook
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Fund detail

Oakmark / Harris Associates (Bill Nygren)

large-active, value, concentrated, lo

Quarters 52
2026-03-31 $75.03B
Positions 156
Showing 30 of 41 rows (filtered from 182)

Price is the latest implied close from the selected quarter's 13F (value ÷ shares). Est. Cost is a running average that assumes each quarter's trades cleared near the midpoint of consecutive 13F closes (or yfinance VWAP when available). Most accurate for slow accumulators, least accurate for activists who build positions in a few days.

# Issuer Value ↑ Weight Shares Share Δ Share Δ % Prev Weight First Held Price Est. Cost Unrealized % Status
1 IDEXX LABS INC IDXX $271K 0.00% 482 +27 +5.93% 0.00% 2025-09-30 $562 ~$639 -12.05%
2 ISHARES TR SGOV $376K 0.00% 3,736 +3,336 +834.00% 0.00% 2025-12-31 $101 ~$101 +0.15%
3 ELI LILLY & CO LLY $414K 0.00% 450 +36 +8.70% 0.00% 2014-03-31 $920 ~$136 +577.18%
4 BROADCOM INC AVGO $561K 0.00% 1,813 +103 +6.02% 0.00% 2025-06-30 $310 ~$279 +11.08%
5 WORKDAY INC WDAY $1.5M 0.00% 11,667 +5,940 +103.72% 0.00% 2019-12-31 $130 ~$163 -20.47%
6 ALIBABA GROUP HLDG LTD BABA $1.7M 0.00% 13,441 +3,852 +40.17% 0.00% 2020-03-31 $125 ~$168 -25.48%
7 META PLATFORMS INC META $2.6M 0.00% 4,461 +176 +4.11% 0.00% 2017-06-30 $572 ~$386 +48.41%
8 STATE STR SPDR S&P 500 ETF T SPY $5.0M 0.01% 7,712 +2,675 +53.11% 0.00% 2021-12-31 $650 ~$650 +0.11%
9 KB FINL GROUP INC KB $8.3M 0.01% 83,474 +80,359 +2579.74% 0.00% 2025-06-30 $100 ~$101 -1.21%
10 COLLIERS INTL GROUP INC CIGI $33.5M 0.04% 313,300 +240,700 +331.54% 0.01% 2023-03-31 $107 ~$117 -8.66%
11 BLACKROCK INC BLK $52.5M 0.07% 54,555 +146 +0.27% 0.07% 2024-12-31 $962 ~$1,022 -5.87%
12 VAIL RESORTS INC MTN $95.7M 0.13% 745,558 +30,782 +4.31% 0.12% 2023-03-31 $128 ~$199 -35.53%
13 OWENS CORNING NEW OC $99.1M 0.13% 915,393 +634,865 +226.31% 0.04% 2025-06-30 $108 ~$124 -12.74%
14 ABM INDS INC ABM $111.0M 0.15% 2,882,144 +170,266 +6.28% 0.14% 2022-06-30 $39 ~$46 -16.28%
15 FLUTTER ENTMT PLC $115.4M 0.15% 1,131,464 +114,501 +11.26% 0.28% 2025-03-31 $102 ~$225 -54.64%
16 MONDELEZ INTL INC MDLZ $324.6M 0.43% 5,631,456 +1,011,698 +21.90% 0.31% 2013-12-31 $58 ~$57 +1.90%
17 CHARLES RIV LABS INTL INC CRL $371.4M 0.50% 2,153,296 +475,690 +28.36% 0.42% 2025-06-30 $172 ~$161 +7.36%
18 PAYCOM SOFTWARE INC PAYC $395.9M 0.53% 3,257,774 +48,015 +1.50% 0.65% 2023-12-31 $122 ~$192 -36.55%
19 CENTENE CORP DEL CNC $461.5M 0.62% 14,094,531 +5,043,977 +55.73% 0.47% 2016-03-31 $33 ~$57 -42.80%
20 ICON PLC $481.5M 0.64% 4,351,317 +1,841,151 +73.35% 0.58% 2025-06-30 $111 ~$150 -26.00%
21 GARTNER INC IT $496.5M 0.66% 3,135,774 +2,171,790 +225.29% 0.31% 2018-06-30 $158 ~$237 -33.17%
22 COREBRIDGE FINL INC CRBG $595.6M 0.79% 24,964,260 +594,243 +2.44% 0.93% 2023-03-31 $24 ~$24 -0.07%
23 CDW CORP CDW $651.5M 0.87% 5,383,062 +857,250 +18.94% 0.78% 2015-09-30 $121 ~$142 -14.93%
24 SYSCO CORP SYY $785.3M 1.05% 11,009,012 +3,095,401 +39.11% 0.74% 2024-12-31 $71 ~$78 -7.97%
25 GLOBAL PMTS INC GPN $797.9M 1.06% 11,855,322 +506,961 +4.47% 1.11% 2021-12-31 $67 ~$95 -29.40%
26 CARLYLE GROUP INC CG $802.5M 1.07% 16,583,907 +1,385,638 +9.12% 1.14% 2024-12-31 $48 ~$52 -6.83%
27 AERCAP HOLDINGS NV $809.6M 1.08% 5,901,622 +61,142 +1.05% 1.06% 2025-12-31 $137 ~$144 -4.55%
28 UNION PAC CORP UNP $917.7M 1.22% 3,782,438 +125,928 +3.44% 1.07% 2013-06-30 $243 ~$211 +15.03%
29 NETFLIX INC. NFLX $948.0M 1.26% 9,859,773 +9,827,233 +30200.47% 0.00% 2017-09-30 $96 ~$88 +9.06%
30 REINSURANCE GROUP AMER INC RGA $990.3M 1.32% 4,850,478 +589,400 +13.83% 1.10% 2014-03-31 $204 ~$159 +28.64%