W.W. Grainger, Inc.
US ˙ NYSE ˙ US3848021040

SecurityGWW / W.W. Grainger, Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership72,443 shares
Latest Disclosed Value $ 79,021,755
Citigroup Inc ownership in GWW / W.W. Grainger, Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 72,443 shares of W.W. Grainger, Inc. (US:GWW) valued at $79,021,549 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 60,658 shares of W.W. Grainger, Inc.. This represents a change in shares of 19.43% during the quarter. The current value of the position is $93,032,749 USD.

Citigroup Inc 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 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 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.

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)
2026-05-11 2026-03-31 13F WW GRAINGER COM 384802104 72,443 11,785 19.43 79,022 29.10 0.0170
2026-02-13 2025-12-31 13F WW GRAINGER COM 384802104 60,658 715 1.19 61,207 7.15 0.0270
2025-11-10 2025-09-30 13F GRAINGER W W COM 384802104 59,943 -24,820 -29.28 57,124 -35.22 0.0255
2025-08-11 2025-06-30 13F GRAINGER W W COM 384802104 84,763 19,604 30.09 88,174 36.99 0.0433
2025-05-12 2025-03-31 13F GRAINGER W W COM 384802104 65,159 19,746 43.48 64,366 34.47 0.0329
2025-02-12 2024-12-31 13F GRAINGER W W COM 384802104 45,413 -5,130 -10.15 47,868 -8.83 0.0284
2024-11-12 2024-09-30 13F GRAINGER W W COM 384802104 50,543 -15,696 -23.70 52,505 -12.15 0.0304
2024-08-12 2024-06-30 13F GRAINGER W W COM 384802104 66,239 8,065 13.86 59,764 0.99 0.0383
2024-05-10 2024-03-31 13F GRAINGER W W COM 384802104 58,174 -961 -1.63 59,180 20.77 0.0389
2024-02-09 2023-12-31 13F GRAINGER W W COM 384802104 59,135 -10,237 -14.76 49,005 2.10 0.0345
2023-12-06 2023-09-30 13F/A-1 GRAINGER W W COM 384802104 69,372 -17,950 -20.56 47,994 -30.30 0.0359
2023-11-09 2023-09-30 13F GRAINGER W W COM 384802104 69,372 -17,950 47,994 0.0143
2023-08-10 2023-06-30 13F GRAINGER W W COM 384802104 87,322 17,316 24.74 68,861 42.81 0.0452
2023-05-11 2023-03-31 13F GRAINGER W W COM 384802104 70,006 325 0.47 48,221 24.41 0.0338
2023-02-09 2022-12-31 13F GRAINGER W W COM 384802104 69,681 4,870 7.51 38,760 22.25 0.0309
2022-11-10 2022-09-30 13F GRAINGER W W COM 384802104 64,811 -10,947 -14.45 31,704 -7.91 0.0227
2022-08-10 2022-06-30 13F GRAINGER W W COM 384802104 75,758 -2,140 -2.75 34,428 -14.32 0.0256
2022-05-12 2022-03-31 13F GRAINGER W W COM 384802104 77,898 -14,855 -16.02 40,180 -16.41 0.0244
2022-02-10 2021-12-31 13F GRAINGER W W COM 384802104 92,753 -3,629 -3.77 48,068 26.88 0.0257
2021-11-10 2021-09-30 13F GRAINGER W W COM 384802104 96,382 926 0.97 37,884 -9.39 0.0224
2021-08-10 2021-06-30 13F GRAINGER W W COM 384802104 95,456 -9,311 -8.89 41,810 -0.47 0.0252
2021-05-13 2021-03-31 13F GRAINGER W W COM 384802104 104,767 18,737 21.78 42,006 19.58 0.0272
2021-02-11 2020-12-31 13F GRAINGER W W COM 384802104 86,030 -271 -0.31 35,129 14.09 0.0207
2020-11-12 2020-09-30 13F GRAINGER W W COM 384802104 86,301 -9,994 -10.38 30,790 1.78 0.0201
2020-08-12 2020-06-30 13F GRAINGER W W COM 384802104 96,295 15,568 19.28 30,252 50.79 0.0236
2020-05-12 2020-03-31 13F GRAINGER W W COM 384802104 80,727 -14,883 -15.57 20,062 -38.01 0.0181
2020-02-12 2019-12-31 13F GRAINGER W W COM 384802104 95,610 -3,374 -3.41 32,365 10.04 0.0234
2019-11-08 2019-09-30 13F GRAINGER W W COM 384802104 98,984 -2,300 -2.27 29,413 8.27 0.0233
2019-08-12 2019-06-30 13F GRAINGER W W COM 384802104 101,284 -10,035 -9.01 27,167 -18.90 0.0219
2019-05-13 2019-03-31 13F GRAINGER W W COM 384802104 111,319 -10,527 -8.64 33,500 -2.63 0.0323
2019-02-12 2018-12-31 13F GRAINGER W W COM 384802104 121,846 23,800 24.27 34,406 -1.82 0.0348
2018-11-13 2018-09-30 13F GRAINGER W W COM 384802104 98,046 20,603 26.60 35,043 46.72 0.0313
2018-08-10 2018-06-30 13F GRAINGER W W COM 384802104 77,443 -15,250 -16.45 23,884 -8.71 0.0219
2018-05-11 2018-03-31 13F GRAINGER W W COM 384802104 92,693 38,562 71.24 26,164 104.60 0.0216
2018-02-12 2017-12-31 13F GRAINGER W W COM 384802104 54,131 -16,841 -23.73 12,788 0.25 0.0103
2017-11-13 2017-09-30 13F GRAINGER W W COM 384802104 70,972 33,057 87.19 12,756 86.38 0.0104
2017-08-11 2017-06-30 13F GRAINGER W W COM 384802104 37,915 -18,606 -32.92 6,844 -47.97 0.0062
2017-05-12 2017-03-31 13F GRAINGER W W COM 384802104 56,521 1,320 2.39 13,155 2.62 0.0117
2017-02-10 2016-12-31 13F GRAINGER W W COM 384802104 55,201 6,806 14.06 12,819 17.81 0.0116
2016-11-10 2016-09-30 13F GRAINGER W W COM 384802104 48,395 3,819 8.57 10,881 7.40 0.0102
2016-08-12 2016-06-30 13F GRAINGER W W COM 384802104 44,576 14,384 47.64 10,131 43.76 0.0103
2016-05-13 2016-03-31 13F GRAINGER W W COM 384802104 30,192 10,433 52.80 7,047 76.04 0.0079
2016-02-12 2015-12-31 13F GRAINGER W W COM 384802104 19,759 15,648 380.64 4,003 353.34 0.0040
2015-11-13 2015-09-30 13F GRAINGER W W COM 384802104 4,111 -8,152 -66.48 883 -69.59 0.0008
2015-08-13 2015-06-30 13F GRAINGER W W COM 384802104 12,263 1,812 17.34 2,904 17.86 0.0026
2015-05-14 2015-03-31 13F GRAINGER W W COM 384802104 10,451 1,158 12.46 2,464 4.01 0.0024
2015-02-17 2014-12-31 13F GRAINGER W W COM 384802104 9,293 -1,222 -11.62 2,369 -10.47 0.0021
2014-11-14 2014-09-30 13F GRAINGER W W COM 384802104 10,515 -8,655 -45.15 2,646 -45.71 0.0023
2014-08-14 2014-06-30 13F GRAINGER W W COM 384802104 19,170 -4,858 -20.22 4,874 -19.70 0.0047
2014-05-15 2014-03-31 13F GRAINGER W W COM 384802104 24,028 10,431 76.72 6,070 74.83 0.0062
2014-02-14 2013-12-31 13F GRAINGER W W COM 384802104 13,597 -23,079 -62.93 3,472 -63.83 0.0031
2013-11-14 2013-09-30 13F GRAINGER W W COM 384802104 36,676 -3,702 -9.17 9,598 -5.74 0.0090
2013-08-14 2013-06-30 13F GRAINGER W W COM 384802104 40,378 40,378 10,182 0.0100
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
(%)
2021-05-13 2021-03-31 13F GRAINGER W W COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F GRAINGER W W COM Call 5,700 -6.56 2,328 6.99 n/a n/a n/a
2020-11-12 2020-09-30 13F GRAINGER W W COM Call 6,100 -3.17 2,176 9.95 n/a n/a n/a
2020-08-12 2020-06-30 13F GRAINGER W W COM Call 6,300 -34.38 1,979 -17.06 n/a n/a n/a
2020-05-12 2020-03-31 13F GRAINGER W W COM Call 9,600 -40.74 2,386 -56.49 n/a n/a n/a
2020-02-12 2019-12-31 13F GRAINGER W W COM Call 16,200 -10.50 5,484 1.97 n/a n/a n/a
2019-11-08 2019-09-30 13F GRAINGER W W COM Call 18,100 15.29 5,378 27.71 n/a n/a n/a
2019-08-12 2019-06-30 13F GRAINGER W W COM Call 15,700 -32.03 4,211 -39.42 n/a n/a n/a
2019-05-13 2019-03-31 13F GRAINGER W W COM Call 23,100 -26.20 6,951 -21.35 n/a n/a n/a
2019-02-12 2018-12-31 13F GRAINGER W W COM Call 31,300 28.28 8,838 1.34 n/a n/a n/a
2018-11-13 2018-09-30 13F GRAINGER W W COM Call 24,400 78.10 8,721 106.41 n/a n/a n/a
2018-08-10 2018-06-30 13F GRAINGER W W COM Call 13,700 -40.17 4,225 -34.64 n/a n/a n/a
2018-05-11 2018-03-31 13F GRAINGER W W COM Call 22,900 -26.60 6,464 -12.30 n/a n/a n/a
2018-02-12 2017-12-31 13F GRAINGER W W COM Call 31,200 267.06 7,371 382.40 n/a n/a n/a
2017-11-13 2017-09-30 13F GRAINGER W W COM Call 8,500 51.79 1,528 51.14 n/a n/a n/a
2017-08-11 2017-06-30 13F GRAINGER W W COM Call 5,600 460.00 1,011 333.91 n/a n/a n/a
2017-05-12 2017-03-31 13F GRAINGER W W COM Call 1,000 400.00 233 406.52 n/a n/a n/a
2017-02-10 2016-12-31 13F GRAINGER W W COM Call 200 100.00 46 109.09 n/a n/a n/a
2016-11-10 2016-09-30 13F GRAINGER W W COM Call 100 22 n/a n/a n/a
2016-08-12 2016-06-30 13F GRAINGER W W COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-05-13 2016-03-31 13F GRAINGER W W COM Call 100 23 n/a n/a n/a
2016-02-12 2015-12-31 13F GRAINGER W W COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-11-13 2015-09-30 13F GRAINGER W W COM Call 100 22 n/a n/a n/a
2014-11-14 2014-09-30 13F GRAINGER W W COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2014-08-14 2014-06-30 13F GRAINGER W W COM Call 7,800 -43.07 1,983 -42.70 n/a n/a n/a
2014-05-15 2014-03-31 13F GRAINGER W W COM Call 13,700 0.00 3,461 -1.09 n/a n/a n/a
2014-02-14 2013-12-31 13F GRAINGER W W COM Call 13,700 -50.00 3,499 -51.21 n/a n/a n/a
2013-11-14 2013-09-30 13F GRAINGER W W COM Call 27,400 100.00 7,171 107.55 n/a n/a n/a
2013-08-14 2013-06-30 13F GRAINGER W W COM Call 13,700 3,455 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
(%)
2021-05-13 2021-03-31 13F GRAINGER W W COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F GRAINGER W W COM Put 13,100 184.78 5,349 225.96 n/a n/a n/a
2020-11-12 2020-09-30 13F GRAINGER W W COM Put 4,600 -30.30 1,641 -20.84 n/a n/a n/a
2020-08-12 2020-06-30 13F GRAINGER W W COM Put 6,600 -19.51 2,073 1.72 n/a n/a n/a
2020-05-12 2020-03-31 13F GRAINGER W W COM Put 8,200 -55.43 2,038 -67.28 n/a n/a n/a
2020-02-12 2019-12-31 13F GRAINGER W W COM Put 18,400 -20.35 6,229 -9.25 n/a n/a n/a
2019-11-08 2019-09-30 13F GRAINGER W W COM Put 23,100 -7.60 6,864 2.36 n/a n/a n/a
2019-08-12 2019-06-30 13F GRAINGER W W COM Put 25,000 -28.37 6,706 -36.15 n/a n/a n/a
2019-05-13 2019-03-31 13F GRAINGER W W COM Put 34,900 1.16 10,502 7.81 n/a n/a n/a
2019-02-12 2018-12-31 13F GRAINGER W W COM Put 34,500 -19.01 9,741 -36.02 n/a n/a n/a
2018-11-13 2018-09-30 13F GRAINGER W W COM Put 42,600 108.82 15,226 142.03 n/a n/a n/a
2018-08-10 2018-06-30 13F GRAINGER W W COM Put 20,400 -50.72 6,291 -46.17 n/a n/a n/a
2018-05-11 2018-03-31 13F GRAINGER W W COM Put 41,400 35.74 11,686 62.17 n/a n/a n/a
2018-02-12 2017-12-31 13F GRAINGER W W COM Put 30,500 563.04 7,206 771.34 n/a n/a n/a
2017-11-13 2017-09-30 13F GRAINGER W W COM Put 4,600 53.33 827 52.58 n/a n/a n/a
2017-08-11 2017-06-30 13F GRAINGER W W COM Put 3,000 57.89 542 22.62 n/a n/a n/a
2017-05-12 2017-03-31 13F GRAINGER W W COM Put 1,900 -17.39 442 -17.23 n/a n/a n/a
2017-02-10 2016-12-31 13F GRAINGER W W COM Put 2,300 76.92 534 82.88 n/a n/a n/a
2016-11-10 2016-09-30 13F GRAINGER W W COM Put 1,300 -69.05 292 -69.39 n/a n/a n/a
2016-08-12 2016-06-30 13F GRAINGER W W COM Put 4,200 600.00 954 581.43 n/a n/a n/a
2016-05-13 2016-03-31 13F GRAINGER W W COM Put 600 20.00 140 38.61 n/a n/a n/a
2016-02-12 2015-12-31 13F GRAINGER W W COM Put 500 66.67 101 55.38 n/a n/a n/a
2015-11-13 2015-09-30 13F GRAINGER W W COM Put 300 65 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.