W.W. Grainger, Inc.
MX ˙ BMV ˙ US3848021040
SecurityMX:GWW / W.W. Grainger, Inc.
InstitutionQuantinno Capital Management LP
Latest Disclosed Ownership75,318 shares
Latest Disclosed Value $ 82,157,629
Quantinno Capital Management LP reports 47.26% increase in ownership of GWW / W.W. Grainger, Inc.

On May 15, 2026 - Quantinno Capital Management LP filed a 13F-HR form disclosing ownership of 75,318 shares of W.W. Grainger, Inc. (MX:GWW) valued at $82,157,629 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 51,146 shares of W.W. Grainger, Inc.. This represents a change in shares of 47.26% during the quarter.

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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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)
2026-05-15 2026-03-31 13F WW GRAINGER COM 384802104 75,318 24,172 47.26 82,158 59.19 0.1371
2026-02-17 2025-12-31 13F WW GRAINGER COM 384802104 51,146 12,196 31.31 51,610 39.04 0.1036
2025-11-14 2025-09-30 13F GRAINGER W W COM 384802104 38,950 6,809 21.18 37,118 11.02 0.1013
2025-08-14 2025-06-30 13F GRAINGER W W COM 384802104 32,141 2,667 9.05 33,435 14.83 0.1444
2025-05-12 2025-03-31 13F GRAINGER W W COM 384802104 29,474 17,058 137.39 29,115 122.46 0.1896
2025-02-14 2024-12-31 13F GRAINGER W W COM 384802104 12,416 1,867 17.70 13,088 19.44 0.1287
2024-11-14 2024-09-30 13F GRAINGER W W COM 384802104 10,549 1,295 13.99 10,959 31.25 0.1425
2024-08-14 2024-06-30 13F GRAINGER W W COM 384802104 9,254 1,209 15.03 8,350 2.02 0.1502
2024-05-14 2024-03-31 13F GRAINGER W W COM 384802104 8,045 2,854 54.98 8,184 90.24 0.1779
2024-02-14 2023-12-31 13F GRAINGER W W COM 384802104 5,191 528 11.32 4,302 33.35 0.1506
2023-11-14 2023-09-30 13F GRAINGER W W COM 384802104 4,663 1,221 35.47 3,226 18.87 0.1469
2023-08-04 2023-06-30 13F GRAINGER W W COM 384802104 3,442 907 35.78 2,714 55.44 0.1550
2023-05-03 2023-03-31 13F GRAINGER W W COM 384802104 2,535 765 43.22 1,746 77.26 0.1155
2023-02-13 2022-12-31 13F GRAINGER W W COM 384802104 1,770 25 1.43 985 15.34 0.0735
2022-11-08 2022-09-30 13F GRAINGER W W COM 384802104 1,745 -234 -11.82 854 -5.01 0.1100
2022-08-15 2022-06-30 13F GRAINGER W W COM 384802104 1,979 888 81.39 899 59.68 0.1297
2022-05-12 2022-03-31 13F GRAINGER W W COM 384802104 1,091 -84 -7.15 563 -7.55 0.0859
2022-02-14 2021-12-31 13F GRAINGER W W COM 384802104 1,175 1,175 609 0.1103
2021-02-09 2020-12-31 13F GRAINGER W W COM 384802104 0 -601 -100.00 0 -100.00
2020-11-16 2020-09-30 13F GRAINGER W W COM 384802104 601 601 214 0.1431
2020-08-14 2020-06-30 13F GRAINGER W W COM 384802104 0 -2,207 -100.00 0 -100.00
2020-05-15 2020-03-31 13F GRAINGER W W COM 384802104 2,207 2,207 548 0.3422
2020-02-14 2019-12-31 13F GRAINGER W W COM 384802104 0 -1,532 -100.00 0 -100.00
2019-11-14 2019-09-30 13F GRAINGER W W COM 384802104 1,532 1,532 455 0.3064
2019-08-14 2019-06-30 13F GRAINGER W W COM 384802104 0 -1,068 -100.00 0 -100.00
2019-05-14 2019-03-31 13F GRAINGER W W COM 384802104 1,068 -56 -4.98 321 1.26 0.2056
2019-02-14 2018-12-31 13F GRAINGER W W COM 384802104 1,124 1,124 317 0.2582
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.