AAON, Inc.
MX ˙ BMV ˙ US0003602069
SecurityMX:AAON / AAON, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership743,485 shares
Latest Disclosed Value $ 61,523,385
Northern Trust Corp reports 1.08% decrease in ownership of AAON / AAON, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 743,485 shares of AAON, Inc. (MX:AAON) valued at $61,523,385 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 751,640 shares of AAON, Inc.. This represents a change in shares of -1.08% 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)
2026-05-14 2026-03-31 13F AAON COM PAR $0.004 000360206 743,485 -8,155 -1.08 61,523 7.35 0.0017
2026-02-17 2025-12-31 13F AAON COM PAR $0.004 000360206 751,640 -11,071 -1.45 57,313 -19.58 0.0073
2025-11-14 2025-09-30 13F AAON COM PAR $0.004 000360206 762,711 113,249 17.44 71,268 48.79 0.0091
2025-08-13 2025-06-30 13F AAON COM PAR $0.004 000360206 649,462 4,740 0.74 47,898 -4.91 0.0066
2025-05-13 2025-03-31 13F AAON COM PAR $0.004 000360206 644,722 19,316 3.09 50,372 -31.56 0.0075
2025-02-14 2024-12-31 13F AAON COM PAR $0.004 000360206 625,406 133,961 27.26 73,598 38.87 0.0104
2024-11-13 2024-09-30 13F AAON COM 000360206 491,445 -320,347 -39.46 52,997 -25.17 0.0087
2024-08-14 2024-06-30 13F AAON COM 000360206 811,792 23,859 3.03 70,821 2.02 0.0119
2024-05-14 2024-03-31 13F AAON COM 000360206 787,933 -15,858 -1.97 69,417 16.91 0.0120
2024-02-13 2023-12-31 13F AAON COM 000360206 803,791 -390 -0.05 59,376 29.83 0.0107
2023-11-13 2023-09-30 13F AAON COM 000360206 804,181 273,600 51.57 45,734 -9.09 0.0089
2023-08-11 2023-06-30 13F AAON COM 000360206 530,581 18,148 3.54 50,304 1.53 0.0097
2023-05-15 2023-03-31 13F AAON COM 000360206 512,433 -10,543 -2.02 49,547 25.79 0.0098
2023-02-13 2022-12-31 13F AAON COM 000360206 522,976 8,494 1.65 39,391 42.10 0.0083
2022-11-14 2022-09-30 13F AAON COM 000360206 514,482 -6 -0.00 27,719 -1.61 0.0063
2022-08-12 2022-06-30 13F AAON COM 000360206 514,488 2,532 0.49 28,174 -1.25 0.0060
2022-05-13 2022-03-31 13F AAON COM 000360206 511,956 -18,069 -3.41 28,532 -32.23 0.0050
2022-02-08 2021-12-31 13F AAON COM 000360206 530,025 -7,375 -1.37 42,100 19.90 0.0069
2021-11-15 2021-09-30 13F AAON COM 000360206 537,400 -17,721 -3.19 35,114 1.06 0.0062
2021-08-13 2021-06-30 13F AAON COM PAR $0.004 000360206 555,121 -3,767 -0.67 34,746 -11.20 0.0061
2021-05-12 2021-03-31 13F AAON COM PAR $0.004 000360206 558,888 -22,447 -3.86 39,127 1.01 0.0073
2021-02-11 2020-12-31 13F AAON COM PAR $0.004 000360206 581,335 -17,641 -2.95 38,734 7.33 0.0075
2020-11-16 2020-09-30 13F AAON COM PAR $0.004 000360206 598,976 -33,605 -5.31 36,089 5.08 0.0079
2020-08-14 2020-06-30 13F AAON COM 000360206 632,581 -39,307 -5.85 34,343 5.78 0.0081
2020-05-14 2020-03-31 13F AAON COM PAR $0.004 000360206 671,888 -617 -0.09 32,465 -2.30 0.0093
2020-02-14 2019-12-31 13F AAON COM PAR $0.004 000360206 672,505 -16,499 -2.39 33,228 4.98 0.0074
2019-11-13 2019-09-30 13F AAON COM 000360206 689,004 10,551 1.56 31,653 -7.03 0.0076
2019-08-13 2019-06-30 13F AAON COM PAR $0.004 000360206 678,453 -13,624 -1.97 34,045 6.52 0.0081
2019-05-13 2019-03-31 13F AAON COM PAR $0.004 000360206 692,077 23,602 3.53 31,960 36.37 0.0079
2019-02-12 2018-12-31 13F AAON COM PAR $0.004 000360206 668,475 -11,596 -1.71 23,437 -8.83 0.0066
2018-11-14 2018-09-30 13F AAON COM PAR $0.004 000360206 680,071 15,391 2.32 25,706 16.31 0.0063
2018-09-18 2018-06-30 13F/A-1 AAON COM PAR $0.004 000360206 664,680 11,977 1.83 22,101 -13.18 0.0056
2018-08-14 2018-06-30 13F AAON COM PAR $0.004 000360206 668,138 15,435 22,216
2018-05-09 2018-03-31 13F AAON COM PAR $0.004 000360206 652,703 -1,496 -0.23 25,456 6.03 0.0066
2018-02-14 2017-12-31 13F AAON COM PAR $0.004 000360206 654,199 -8,283 -1.25 24,009 5.12 0.0061
2017-11-13 2017-09-30 13F AAON COM PAR $0.004 000360206 662,482 8,419 1.29 22,839 -5.24 0.0060
2017-08-11 2017-06-30 13F AAON COM 000360206 654,063 25,877 4.12 24,102 8.54 0.0067
2017-05-12 2017-03-31 13F AAON COM 000360206 628,186 353 0.06 22,206 7.01 0.0064
2017-02-13 2016-12-31 13F AAON COM 000360206 627,833 6,334 1.02 20,751 15.85 0.0064
2016-11-09 2016-09-30 13F AAON COM 000360206 621,499 23,002 3.84 17,912 8.79 0.0056
2016-08-12 2016-06-30 13F AAON COM 000360206 598,497 6,440 1.09 16,465 -0.68 0.0053
2016-08-19 2016-03-31 13F/A-1 AAON COM 000360206 592,057 3,453 0.59 16,577 21.28 0.0055
2016-05-13 2016-03-31 13F AAON COM 000360206 592,057 16,577
2016-02-12 2015-12-31 13F AAON COM 000360206 588,604 4,960 0.85 13,668 20.83 0.0045
2015-11-12 2015-09-30 13F AAON COM 000360206 583,644 -2,130 -0.36 11,312 -14.25 0.0038
2015-08-13 2015-06-30 13F AAON COM 000360206 585,774 -17,303 -2.87 13,192 -10.83 0.0089
2015-05-14 2015-03-31 13F AAON COM 000360206 603,077 -554 -0.09 14,794 9.46 0.0044
2015-02-12 2014-12-31 13F AAON COM 000360206 603,631 -19,534 -3.13 13,516 27.51 0.0041
2014-11-13 2014-09-30 13F AAON COM 000360206 623,165 180,067 40.64 10,600 -28.63 0.0033
2014-08-14 2014-06-30 13F AAON COM 000360206 443,098 -28,658 -6.07 14,853 12.96 0.0046
2014-05-14 2014-03-31 13F AAON COM 000360206 471,756 -34,692 -6.85 13,149 -18.74 0.0041
2014-02-21 2013-12-31 13F/A-1 AAON COM 000360206 506,448 -2,454 -0.48 16,181 19.71 0.0052
2014-02-12 2013-12-31 13F AAON COM 000360206 506,448 16,181
2013-11-13 2013-09-30 13F AAON COM 000360206 508,902 92,754 22.29 13,517 -1.81 0.0048
2013-08-09 2013-06-30 13F AAON COM 000360206 416,148 416,148 13,766 0.0050
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.