W.W. Grainger, Inc.
AT ˙ WBAG ˙ US3848021040
1.111,00 € ↓ -3,00 (-0,27%)
2026-06-04
DEL PRIS
SecurityAT:GWW / W.W. Grainger, Inc.
InstitutionUBS Group AG
Latest Disclosed Ownership173,165 shares
Latest Disclosed Value $ 188,890,114
UBS Group AG ownership in GWW / W.W. Grainger, Inc.

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 173,165 shares of W.W. Grainger, Inc. (AT:GWW) valued at $162,567,302 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 180,990 shares of W.W. Grainger, Inc.. This represents a change in shares of -4.32% during the quarter. The current value of the position is $192,386,315 USD.

UBS Group AG has a history of taking positions in derivatives of the underlying security (GWW) in the form of stock options. The firm currently holds call options representing 2,300 of underlying shares valued at $2,508,863 USD and put options representing 2,300 of underlying shares valued at $2,508,863 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

AT:GWW / W.W. Grainger, Inc. Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-05 2026-03-31 13F WW GRAINGER COM 384802104 173,165 -7,825 -4.32 188,890 3.43 0.0283
2026-01-29 2025-12-31 13F WW GRAINGER COM 384802104 180,990 18,868 11.64 182,628 18.21 0.0296
2025-11-13 2025-09-30 13F GRAINGER W W COM 384802104 162,122 -73,114 -31.08 154,496 -36.86 0.0242
2025-08-14 2025-06-30 13F GRAINGER W W COM 384802104 235,236 -278 -0.12 244,702 5.18 0.0424
2025-05-13 2025-03-31 13F GRAINGER W W COM 384802104 235,514 107,708 84.27 232,648 72.70 0.0428
2025-02-14 2024-12-31 13F GRAINGER W W COM 384802104 127,806 -13,230 -9.38 134,714 -8.05 0.0249
2024-11-14 2024-09-30 13F GRAINGER W W COM 384802104 141,036 17,290 13.97 146,510 31.22 0.0319
2024-08-14 2024-06-30 13F GRAINGER W W COM 384802104 123,746 -926 -0.74 111,649 -11.97 0.0276
2024-05-13 2024-03-31 13F GRAINGER W W COM 384802104 124,672 15,739 14.45 126,829 40.50 0.0316
2024-02-09 2023-12-31 13F GRAINGER W W COM 384802104 108,933 6,197 6.03 90,272 27.01 0.0270
2023-11-09 2023-09-30 13F GRAINGER W W COM 384802104 102,736 -7,538 -6.84 71,077 -18.27 0.0245
2023-08-11 2023-06-30 13F GRAINGER W W COM 384802104 110,274 55,675 101.97 86,961 131.23 0.0294
2023-05-12 2023-03-31 13F GRAINGER W W COM 384802104 54,599 -16,496 -23.20 37,608 -4.90 0.0137
2023-02-08 2022-12-31 13F GRAINGER W W COM 384802104 71,095 10,887 18.08 39,547 34.27 0.0148
2022-11-10 2022-09-30 13F GRAINGER W W COM 384802104 60,208 -11,014 -15.46 29,453 -9.00 0.0129
2022-08-10 2022-06-30 13F GRAINGER W W COM 384802104 71,222 6,934 10.79 32,365 -2.39 0.0133
2022-05-16 2022-03-31 13F GRAINGER W W COM 384802104 64,288 -17,395 -21.30 33,158 -21.67 0.0111
2022-02-14 2021-12-31 13F GRAINGER W W COM 384802104 81,683 10,462 14.69 42,330 51.21 0.0121
2021-11-15 2021-09-30 13F GRAINGER W W COM 384802104 71,221 -7,730 -9.79 27,994 -19.05 0.0088
2021-08-13 2021-06-30 13F GRAINGER W W COM 384802104 78,951 7,013 9.75 34,581 19.90 0.0111
2021-05-12 2021-03-31 13F GRAINGER W W COM 384802104 71,938 2,361 3.39 28,842 1.51 0.0096
2021-02-11 2020-12-31 13F GRAINGER W W COM 384802104 69,577 25,029 56.18 28,412 78.77 0.0096
2020-11-12 2020-09-30 13F GRAINGER W W COM 384802104 44,548 11,243 33.76 15,893 51.90 0.0060
2020-07-31 2020-06-30 13F GRAINGER W W COM 384802104 33,305 -4,903 -12.83 10,463 10.21 0.0044
2020-05-01 2020-03-31 13F GRAINGER W W COM 384802104 38,208 -31,039 -44.82 9,494 -59.50 0.0045
2020-02-14 2019-12-31 13F GRAINGER W W COM 384802104 69,247 44,694 182.03 23,441 221.33 0.0082
2019-11-14 2019-09-30 13F GRAINGER W W COM 384802104 24,553 -2,825 -10.32 7,295 -0.67 0.0028
2019-08-14 2019-06-30 13F GRAINGER W W COM 384802104 27,378 -34,997 -56.11 7,344 -60.88 0.0028
2019-05-14 2019-03-31 13F GRAINGER W W COM 384802104 62,375 11,883 23.53 18,771 31.66 0.0078
2019-02-14 2018-12-31 13F GRAINGER W W COM 384802104 50,492 -26,659 -34.55 14,257 -48.30 0.0065
2018-11-14 2018-09-30 13F GRAINGER W W COM 384802104 77,151 30,068 63.86 27,575 89.91 0.0109
2018-08-14 2018-06-30 13F GRAINGER W W COM 384802104 47,083 -126,662 -72.90 14,520 -70.39 0.0063
2018-05-15 2018-03-31 13F GRAINGER W W COM 384802104 173,745 108,293 165.45 49,043 217.16 0.0212
2018-02-14 2017-12-31 13F GRAINGER W W COM 384802104 65,452 -29,003 -30.71 15,463 -8.92 0.0064
2017-11-14 2017-09-30 13F GRAINGER W W COM 384802104 94,455 694 0.74 16,978 0.30 0.0079
2017-11-14 2017-06-30 13F/A-1 GRAINGER W W COM 384802104 93,761 53,016 130.12 16,927 78.50 0.0088
2017-08-14 2017-06-30 13F GRAINGER W W COM 384802104 93,761 53,016 16,927
2017-11-14 2017-03-31 13F/A-1 GRAINGER W W COM 384802104 40,745 6,159 17.81 9,483 18.05 0.0052
2017-05-12 2017-03-31 13F GRAINGER W W COM 384802104 40,745 6,159 9,483
2017-02-14 2016-12-31 13F GRAINGER W W COM 384802104 34,586 251 0.73 8,033 4.05 0.0044
2016-11-14 2016-09-30 13F GRAINGER W W COM 384802104 34,335 -1,408 -3.94 7,720 -4.96 0.0046
2016-08-12 2016-06-30 13F GRAINGER W W COM 384802104 35,743 1,637 4.80 8,123 2.02 0.0051
2016-05-12 2016-03-31 13F GRAINGER W W COM 384802104 34,106 3,271 10.61 7,962 27.45 0.0053
2016-02-16 2015-12-31 13F GRAINGER W W COM 384802104 30,835 -10,066 -24.61 6,247 -28.96 0.0041
2015-11-13 2015-09-30 13F GRAINGER W W COM 384802104 40,901 -13,177 -24.37 8,794 -31.29 0.0062
2015-08-14 2015-06-30 13F GRAINGER W W COM 384802104 54,078 -232 -0.43 12,799 -0.06 0.0085
2015-05-14 2015-03-31 13F GRAINGER W W COM 384802104 54,310 -7,160 -11.65 12,807 -18.26 0.0088
2015-02-17 2014-12-31 13F GRAINGER W W COM 384802104 61,470 61,470 15,668 0.0110
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-05 2026-03-31 13F WW GRAINGER COM Call 2,300 2,509 n/a n/a n/a
2026-01-29 2025-12-31 13F GRAINGER W W COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-13 2025-09-30 13F GRAINGER W W COM Call 700 0.00 667 -8.38 n/a n/a n/a
2025-08-14 2025-06-30 13F GRAINGER W W COM Call 700 0.00 728 5.35 n/a n/a n/a
2025-05-13 2025-03-31 13F GRAINGER W W COM Call 700 0.00 691 -6.24 n/a n/a n/a
2025-02-14 2024-12-31 13F GRAINGER W W COM Call 700 600.00 738 615.53 n/a n/a n/a
2024-11-14 2024-09-30 13F GRAINGER W W COM Call 100 0.00 104 14.44 n/a n/a n/a
2024-08-14 2024-06-30 13F GRAINGER W W COM Call 100 0.00 90 -10.89 n/a n/a n/a
2024-05-13 2024-03-31 13F GRAINGER W W COM Call 100 102 n/a n/a n/a
2015-08-14 2015-06-30 13F GRAINGER W W COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-14 2015-03-31 13F GRAINGER W W COM Call 100 0.00 24 -4.00 n/a n/a n/a
2015-02-17 2014-12-31 13F GRAINGER W W COM Call 100 25 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-05 2026-03-31 13F WW GRAINGER COM Put 2,300 2,509 n/a n/a n/a
2026-01-29 2025-12-31 13F GRAINGER W W COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-13 2025-09-30 13F GRAINGER W W COM Put 700 0.00 667 -8.38 n/a n/a n/a
2025-08-14 2025-06-30 13F GRAINGER W W COM Put 700 0.00 728 5.35 n/a n/a n/a
2025-05-13 2025-03-31 13F GRAINGER W W COM Put 700 0.00 691 -6.24 n/a n/a n/a
2025-02-14 2024-12-31 13F GRAINGER W W COM Put 700 600.00 738 615.53 n/a n/a n/a
2024-11-14 2024-09-30 13F GRAINGER W W COM Put 100 0.00 104 14.44 n/a n/a n/a
2024-08-14 2024-06-30 13F GRAINGER W W COM Put 100 0.00 90 -10.89 n/a n/a n/a
2024-05-13 2024-03-31 13F GRAINGER W W COM Put 100 102 n/a n/a n/a
2016-08-12 2016-06-30 13F GRAINGER W W COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2016-05-12 2016-03-31 13F GRAINGER W W COM Put 115,400 26,938 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.