Acuity Inc.
US ˙ NYSE ˙ US00508Y1029

SecurityAYI / Acuity Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership264,209 shares
Latest Disclosed Value $ 74,037,744
Morgan Stanley reports 1.82% decrease in ownership of AYI / Acuity Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 264,209 shares of Acuity Inc. (US:AYI) valued at $74,036,646 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 269,101 shares of Acuity Inc.. This represents a change in shares of -1.82% during the quarter. The current value of the position is $82,655,144 USD.

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 ACUITY COM 00508Y102 264,209 -4,892 -1.82 74,038 -23.58 0.0045
2026-05-27 2025-12-31 13F/A-1 ACUITY COM 00508Y102 269,101 59,665 28.49 96,888 34.33 0.0058
2026-02-13 2025-12-31 13F ACUITY COM 00508Y102 269,101 59,665 96,888 0.0058
2026-05-27 2025-09-30 13F/A-1 ACUITY COM 00508Y102 209,436 -13,033 -5.86 72,128 8.67 0.0044
2025-11-14 2025-09-30 13F ACUITY COM 00508Y102 209,436 -13,033 72,128 0.0044
2025-08-15 2025-06-30 13F ACUITY COM 00508Y102 222,469 -22,364 -9.13 66,372 2.94 0.0043
2025-05-15 2025-03-31 13F ACUITY COM 00508Y102 244,833 -6,120 -2.44 64,477 -12.05 0.0046
2025-05-15 2024-12-31 13F/A-1 ACUITY BRANDS COM 00508Y102 250,953 42,449 20.36 73,312 27.68 0.0051
2025-02-14 2024-12-31 13F ACUITY BRANDS COM 00508Y102 250,953 42,449 73,312 0.0051
2025-05-14 2024-09-30 13F/A-2 ACUITY BRANDS COM 00508Y102 208,504 -14,467 -6.49 57,421 6.66 0.0042
2025-02-14 2024-09-30 13F/A-1 ACUITY BRANDS COM 00508Y102 208,504 -14,467 57,421 0.0042
2024-11-14 2024-09-30 13F ACUITY BRANDS COM 00508Y102 208,504 -14,467 57,421 0.0042
2025-05-14 2024-06-30 13F/A-2 ACUITY BRANDS COM 00508Y102 222,971 -37,154 -14.28 53,835 -22.99 0.0042
2024-10-17 2024-06-30 13F/A-1 ACUITY BRANDS COM 00508Y102 222,971 -37,154 53,835 0.0042
2024-08-14 2024-06-30 13F ACUITY BRANDS COM 00508Y102 222,971 -37,154 53,835 0.0042
2024-10-17 2024-03-31 13F/A-2 ACUITY BRANDS COM 00508Y102 260,125 79,281 43.84 69,904 88.71 0.0056
2024-08-16 2024-03-31 13F/A-1 ACUITY BRANDS COM 00508Y102 260,125 79,281 69,904 0.0056
2024-05-15 2024-03-31 13F ACUITY BRANDS COM 00508Y102 260,125 79,281 69,904 0.0056
2024-08-16 2023-12-31 13F/A-1 ACUITY BRANDS COM 00508Y102 180,844 -492,675 -73.15 37,043 -67.71 0.0033
2024-02-13 2023-12-31 13F ACUITY BRANDS COM 00508Y102 180,844 -492,675 37,043 0.0033
2023-11-15 2023-09-30 13F ACUITY BRANDS COM 00508Y102 673,519 -498,680 -42.54 114,707 -39.99 0.0117
2023-08-14 2023-06-30 13F ACUITY BRANDS COM 00508Y102 1,172,199 8,273 0.71 191,162 -10.12 0.0188
2023-05-15 2023-03-31 13F ACUITY BRANDS COM 00508Y102 1,163,926 -33,795 -2.82 212,684 7.22 0.0228
2023-02-14 2022-12-31 13F ACUITY BRANDS COM 00508Y102 1,197,721 1,031,432 620.26 198,355 657.51 0.0225
2022-11-14 2022-09-30 13F ACUITY BRANDS COM 00508Y102 166,289 -9,235 -5.26 26,185 -3.15 0.0036
2022-10-27 2022-06-30 13F/A-1 ACUITY BRANDS COM 00508Y102 175,524 117,599 203.02 27,037 146.58 0.0035
2022-08-15 2022-06-30 13F ACUITY BRANDS COM 00508Y102 175,524 117,599 27,037 0.0007
2022-10-27 2022-03-31 13F/A-1 ACUITY BRANDS COM 00508Y102 57,925 -9,326 -13.87 10,965 -23.00 0.0015
2022-05-13 2022-03-31 13F ACUITY BRANDS COM 00508Y102 57,925 -9,326 10,965 0.0015
2022-02-14 2021-12-31 13F ACUITY BRANDS COM 00508Y102 67,251 -134,526 -66.67 14,240 -59.29 0.0018
2021-11-15 2021-09-30 13F ACUITY BRANDS COM 00508Y102 201,777 86,960 75.74 34,982 62.90 0.0047
2021-08-23 2021-06-30 13F/A-1 ACUITY BRANDS COM 00508Y102 114,817 18,642 19.38 21,474 35.33 0.0028
2021-08-16 2021-06-30 13F ACUITY BRANDS COM 00508Y102 114,817 18,642 21,474 0.0006
2021-05-17 2021-03-31 13F ACUITY BRANDS COM 00508Y102 96,175 -86,335 -47.30 15,868 -28.20 0.0023
2021-02-16 2020-12-31 13F ACUITY BRANDS COM 00508Y102 182,510 114,609 168.79 22,100 218.03 0.0034
2020-11-13 2020-09-30 13F ACUITY BRANDS COM 00508Y102 67,901 -9,519 -12.30 6,949 -6.26 0.0013
2020-08-14 2020-06-30 13F ACUITY BRANDS COM 00508Y102 77,420 15,392 24.81 7,413 39.53 0.0016
2020-05-26 2020-03-31 13F/A-1 ACUITY BRANDS COM 00508Y102 62,028 -98,444 -61.35 5,313 -76.01 0.0014
2020-05-15 2020-03-31 13F ACUITY BRANDS COM 00508Y102 62,028 -98,444 5,313 408.1492
2020-02-14 2019-12-31 13F ACUITY BRANDS COM 00508Y102 160,472 -126,854 -44.15 22,146 -42.82 0.0052
2019-11-14 2019-09-30 13F ACUITY BRANDS COM 00508Y102 287,326 206,524 255.59 38,729 247.56 0.0103
2019-08-14 2019-06-30 13F ACUITY BRANDS COM 00508Y102 80,802 -18,411 -18.56 11,143 -6.41 0.0030
2019-05-15 2019-03-31 13F ACUITY BRANDS COM 00508Y102 99,213 29,187 41.68 11,906 47.90 0.0034
2019-02-14 2018-12-31 13F ACUITY BRANDS COM 00508Y102 70,026 -48,215 -40.78 8,050 -56.69 0.0024
2019-04-23 2018-09-30 13F/A-2 ACUITY BRANDS COM 00508Y102 118,241 -14,853 -11.16 18,587 20.54 0.0047
2018-11-20 2018-09-30 13F/A-1 ACUITY BRANDS COM 00508Y102 118,241 0 18,587 0.0047
2018-11-14 2018-09-30 13F ACUITY BRANDS COM 00508Y102 118,241 -14,853 18,587
2019-04-23 2018-06-30 13F/A-1 ACUITY BRANDS COM 00508Y102 133,094 64,944 95.30 15,420 62.57 0.0042
2018-08-14 2018-06-30 13F ACUITY BRANDS COM 00508Y102 133,094 64,944 15,420
2019-04-23 2018-03-31 13F/A-1 ACUITY BRANDS COM 00508Y102 68,150 12,404 22.25 9,485 -3.33 0.0026
2018-05-14 2018-03-31 13F ACUITY BRANDS COM 00508Y102 68,150 12,404 9,485
2019-04-23 2017-12-31 13F/A-1 ACUITY BRANDS COM 00508Y102 55,746 -27,027 -32.65 9,812 -30.79 0.0027
2018-02-14 2017-12-31 13F ACUITY BRANDS COM 00508Y102 55,746 -27,027 9,812
2017-11-14 2017-09-30 13F ACUITY BRANDS COM 00508Y102 82,773 21,721 35.58 14,177 14.23 0.0042
2017-08-11 2017-06-30 13F ACUITY BRANDS COM 00508Y102 61,052 -292,163 -82.72 12,411 -82.78 0.0037
2017-05-22 2017-03-31 13F/A-1 ACUITY BRANDS COM 00508Y102 353,215 173,210 96.23 72,055 73.39 0.0221
2017-05-12 2017-03-31 13F ACUITY BRANDS COM 00508Y102 353,215 72,055
2017-02-22 2016-12-31 13F/A-1 ACUITY BRANDS COM 00508Y102 180,005 32,046 21.66 41,556 6.14 0.0136
2017-02-13 2016-12-31 13F ACUITY BRANDS COM 00508Y102 180,005 41,556
2016-11-10 2016-09-30 13F ACUITY BRANDS COM 00508Y102 147,959 -38,848 -20.80 39,151 -15.48 0.0134
2016-08-12 2016-06-30 13F ACUITY BRANDS COM 00508Y102 186,807 58,949 46.11 46,321 66.08 0.0167
2016-05-12 2016-03-31 13F ACUITY BRANDS COM 00508Y102 127,858 -38,667 -23.22 27,891 -28.36 0.0107
2016-02-09 2015-12-31 13F ACUITY BRANDS COM 00508Y102 166,525 -62,479 -27.28 38,933 -3.17 0.0141
2016-02-08 2015-09-30 13F/A-1 ACUITY BRANDS COM 00508Y102 229,004 29,238 14.64 40,208 11.83 0.0149
2015-11-09 2015-09-30 13F ACUITY BRANDS COM 00508Y102 229,004 40,208
2015-08-12 2015-06-30 13F ACUITY BRANDS COM 00508Y102 199,766 34,001 20.51 35,953 28.98 0.0125
2015-05-14 2015-03-31 13F ACUITY BRANDS COM 00508Y102 165,765 36,793 28.53 27,875 54.30 0.0103
2015-02-13 2014-12-31 13F ACUITY BRANDS COM 00508Y102 128,972 50,002 63.32 18,065 94.35 0.0066
2014-12-16 2014-09-30 13F/A-1 ACUITY BRANDS COM 00508Y102 78,970 -1,288 -1.60 9,295 -16.22 0.0036
2014-11-14 2014-09-30 13F ACUITY BRANDS COM 00508Y102 78,970 9,295
2014-08-12 2014-06-30 13F ACUITY BRANDS COM 00508Y102 80,258 -7,013 -8.04 11,094 -4.11 0.0190
2014-05-13 2014-03-31 13F ACUITY BRANDS COM 00508Y102 87,271 5,134 6.25 11,570 28.86 0.0048
2014-02-13 2013-12-31 13F ACUITY BRANDS COM 00508Y102 82,137 37,413 83.65 8,979 118.20 0.0038
2013-11-13 2013-09-30 13F ACUITY BRANDS INC COM ST COM 00508Y102 44,724 -600 -1.32 4,115 20.22 0.0019
2013-08-08 2013-06-30 13F ACUITY BRANDS INC COM ST COM 00508Y102 45,324 45,324 3,423 0.0017
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.