AAON, Inc.
MX ˙ BMV ˙ US0003602069
SecurityMX:AAON / AAON, Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership191,378 shares
Latest Disclosed Value $ 15,836,480
Rhumbline Advisers reports 2.16% increase in ownership of AAON / AAON, Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 191,378 shares of AAON, Inc. (MX:AAON) valued at $15,836,480 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 187,339 shares of AAON, Inc.. This represents a change in shares of 2.16% 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)
2026-05-12 2026-03-31 13F AAON INC COM PAR $0.004 COM PAR $0.004 COM 000360206 191,378 4,039 2.16 15,836 10.87 0.0135
2026-02-13 2025-12-31 13F AAON INC COM PAR $0.004 COM PAR $0.004 COM 000360206 187,339 -5,949 -3.08 14,285 -20.91 0.0115
2025-11-06 2025-09-30 13F AAON INC COM PAR $0.004 COM PAR $0.004 COM 000360206 193,288 -1,990 -1.02 18,061 25.41 0.0145
2025-08-12 2025-06-30 13F AAON INC COM PAR $0.004 COM PAR $0.004 COM 000360206 195,278 -2,008 -1.02 14,402 -6.57 0.0123
2025-05-29 2025-03-31 13F/A-1 AAON INC COM PAR $0.004 COM PAR $0.004 COM 000360206 197,286 -1,168 -0.59 15,414 -34.00 0.0144
2025-04-08 2025-03-31 13F AAON INC COM PAR $0.004 COM PAR $0.004 COM 000360206 197,286 -1,168 15,414 0.0144
2025-05-29 2024-12-31 13F/A-1 AAON INC COM PAR $0.004 COM PAR $0.004 COM 000360206 198,454 -112 -0.06 23,354 9.06 0.0209
2025-01-30 2024-12-31 13F AAON INC COM PAR $0.004 COM PAR $0.004 COM 000360206 198,454 -112 23,354 0.0209
2024-11-12 2024-09-30 13F AAON INC COM PAR $0.004 COM PAR $0.004 COM 000360206 198,566 -5,232 -2.57 21,413 20.44 0.0193
2024-08-01 2024-06-30 13F AAON INC COM PAR $0.004 COM PAR $0.004 COM 000360206 203,798 6,507 3.30 17,779 2.29 0.0167
2024-05-09 2024-03-31 13F AAON INC COM PAR $0.004 COM PAR $0.004 COM 000360206 197,291 -1,587 -0.80 17,381 18.31 0.0167
2024-02-08 2023-12-31 13F AAON INC COM PAR $0.004 COM PAR $0.004 COM 000360206 198,878 -2,762 -1.37 14,691 28.12 0.0154
2023-11-09 2023-09-30 13F AAON INC COM PAR $0.004 COM PAR $0.004 COM 000360206 201,640 62,004 44.40 11,467 -13.38 0.0133
2023-08-08 2023-06-30 13F AAON INC COM PAR $0.004 COM PAR $0.004 COM 000360206 139,636 2,516 1.83 13,239 101,730.77 0.0148
2023-05-11 2023-03-31 13F AAON INC COM PAR $0.004 COM PA COM 000360206 137,120 -1,347 -0.97 13 -99.88 0.0164
2023-02-14 2022-12-31 13F AAON INC COM PAR $0.004 COM PA COM 000360206 138,467 -294 -0.21 10,429 39.50 0.0140
2022-11-10 2022-09-30 13F AAON INC COM PAR $0.004 COM PA COM 000360206 138,761 10,228 7.96 7,476 6.22 0.0111
2022-08-11 2022-06-30 13F AAON INC COM PAR $0.004 COM PA COM 000360206 128,533 6,268 5.13 7,038 3.29 0.0103
2022-05-12 2022-03-31 13F AAON INC COM PAR $0.004 COM PA COM 000360206 122,265 3,737 3.15 6,814 -27.63 0.0088
2022-02-10 2021-12-31 13F AAON INC COM PAR $0.004 COM PA COM 000360206 118,528 1,715 1.47 9,415 23.35 0.0115
2021-11-12 2021-09-30 13F AAON INC COM PAR $0.004 COM PA COM 000360206 116,813 -17,809 -13.23 7,633 -9.41 0.0103
2021-08-05 2021-06-30 13F AAON INC COM PAR $0.004 COM PA COM 000360206 134,622 -3,370 -2.44 8,426 -12.78 0.0111
2021-05-06 2021-03-31 13F AAON INC COM PAR $0.004 COM PA COM 000360206 137,992 7,781 5.98 9,661 11.35 0.0131
2021-02-10 2020-12-31 13F AAON INC COM PAR $0.004 COM PA COM 000360206 130,211 2,318 1.81 8,676 12.59 0.0120
2020-11-12 2020-09-30 13F AAON INC COM PAR $0.004 COM PA COM 000360206 127,893 1,256 0.99 7,706 12.09 0.0121
2020-08-13 2020-06-30 13F AAON INC COM PAR $0.004 COM PA COM 000360206 126,637 -9,785 -7.17 6,875 4.29 0.0115
2020-05-06 2020-03-31 13F AAON INC COM PAR $0.004 COM PA COM 000360206 136,422 3,281 2.46 6,592 0.21 0.0138
2020-02-05 2019-12-31 13F AAON INC COM PAR $0.004 COM PA COM 000360206 133,141 6,527 5.16 6,578 13.08 0.0110
2019-10-23 2019-09-30 13F AAON INC COM PAR $0.004 COM PA COM 000360206 126,614 2,760 2.23 5,817 -6.40 0.0106
2019-08-14 2019-06-30 13F AAON INC COM PAR $0.004 COM PA COM 000360206 123,854 3,517 2.92 6,215 11.84 0.0117
2019-05-01 2019-03-31 13F AAON INC COM PAR $0.004 COM PA COM 000360206 120,337 366 0.31 5,557 32.12 0.0108
2019-01-31 2018-12-31 13F AAON INC COM PAR $0.004 COM PA COM 000360206 119,971 19,285 19.15 4,206 10.51 0.0092
2018-11-07 2018-09-30 13F AAON INC COM PAR $0.004 COM PA COM 000360206 100,686 -1,998 -1.95 3,806 11.48 0.0074
2018-08-06 2018-06-30 13F AAON INC COM PAR $0.004 COM PA COM 000360206 102,684 1,453 1.44 3,414 -13.53 0.0069
2018-05-02 2018-03-31 13F AAON INC COM PAR $0.004 COM PA COM 000360206 101,231 1,897 1.91 3,948 8.28 0.0082
2018-02-09 2017-12-31 13F AAON INC COM PAR $0.004 COM PA COM 000360206 99,334 13,120 15.22 3,646 22.68 0.0074
2017-11-06 2017-09-30 13F AAON INC COM PAR $0.004 COM PA COM 000360206 86,214 3,020 3.63 2,972 -3.07 0.0065
2017-08-02 2017-06-30 13F AAON INC COM PAR $0.004 COM PA COM 000360206 83,194 335 0.40 3,066 4.68 0.0070
2017-05-02 2017-03-31 13F AAON INC COM PAR $0.004 COM PA COM 000360206 82,859 21,232 34.45 2,929 43.79 0.0068
2017-01-27 2016-12-31 13F AAON INC COM PAR $0.004 COM PA COM 000360206 61,627 2,106 3.54 2,037 18.78 0.0052
2016-11-08 2016-09-30 13F AAON INC COM PAR $0.004 COM PA COM 000360206 59,521 2,450 4.29 1,715 9.24 0.0047
2016-08-11 2016-06-30 13F AAON INC COM PAR $0.004 COM PA COM 000360206 57,071 1,831 3.31 1,570 1.49 0.0047
2016-05-02 2016-03-31 13F AAON INC USD.004 COM 000360206 55,240 410 0.75 1,547 21.52 0.0048
2016-02-03 2015-12-31 13F AAON INC USD.004 COM 000360206 54,830 -3,330 -5.73 1,273 12.95 0.0041
2015-11-04 2015-09-30 13F AAON INC USD.004 COM 000360206 58,160 1,527 2.70 1,127 -11.61 0.0038
2015-08-04 2015-06-30 13F AAON INC USD.004 COM 000360206 56,633 -4,775 -7.78 1,275 -15.34 0.0041
2015-05-12 2015-03-31 13F AAON INC USD.004 COM 000360206 61,408 5,800 10.43 1,506 20.96 0.0043
2015-02-06 2014-12-31 13F AAON INC USD.004 COM 000360206 55,608 -175 -0.31 1,245 31.19 0.0036
2014-11-12 2014-09-30 13F AAON INC USD.004 COM 000360206 55,783 18,591 49.99 949 -23.90 0.0029
2014-08-06 2014-06-30 13F AAON INC USD.004 COM 000360206 37,192 -810 -2.13 1,247 17.75 0.0037
2014-05-06 2014-03-31 13F AAON INC USD.004 COM 000360206 38,002 -1,380 -3.50 1,059 -15.82 0.0031
2014-02-03 2013-12-31 13F AAON INC USD.004 COM 000360206 39,382 -200 -0.51 1,258 19.70 0.0037
2013-11-05 2013-09-30 13F AAON INC USD.004 COM 000360206 39,582 12,887 48.27 1,051 19.03 0.0033
2013-08-07 2013-06-30 13F AAON INC USD.004 COM 000360206 26,695 26,695 883 0.0028
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.