AO 史密斯公司
US ˙ NYSE ˙ US8318652091

SecurityAOS / A. O. Smith Corporation
InstitutionCitigroup Inc
Latest Disclosed Ownership234,084 shares
Latest Disclosed Value $ 15,435,499
Citigroup Inc ownership in AOS / A. O. Smith Corporation

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 234,084 shares of A. O. Smith Corporation (US:AOS) valued at $15,435,499 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 173,759 shares of A. O. Smith Corporation. This represents a change in shares of 34.72% during the quarter. The current value of the position is $13,345,129 USD.

Citigroup Inc has a history of taking positions in derivatives of the underlying security (AOS) 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.

AOS / A. O. Smith Corporation 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 SMITH A O COM 831865209 234,084 60,325 34.72 15,435 32.82 0.0033
2026-02-13 2025-12-31 13F SMITH A O COM 831865209 173,759 76,424 78.52 11,621 62.65 0.0051
2025-11-10 2025-09-30 13F SMITH A O COM 831865209 97,335 2,953 3.13 7,145 15.47 0.0032
2025-08-11 2025-06-30 13F SMITH A O COM 831865209 94,382 -64,519 -40.60 6,189 -40.41 0.0030
2025-05-12 2025-03-31 13F SMITH A O COM 831865209 158,901 36,202 29.50 10,386 24.09 0.0053
2025-02-12 2024-12-31 13F SMITH A O COM 831865209 122,699 -58,738 -32.37 8,369 -48.65 0.0050
2024-11-12 2024-09-30 13F SMITH A O COM 831865209 181,437 -19,163 -9.55 16,298 -0.65 0.0094
2024-08-12 2024-06-30 13F SMITH A O COM 831865209 200,600 -1,174 -0.58 16,405 -9.11 0.0105
2024-05-10 2024-03-31 13F SMITH A O COM 831865209 201,774 45,221 28.89 18,051 39.86 0.0119
2024-02-09 2023-12-31 13F SMITH A O COM 831865209 156,553 31,564 25.25 12,906 56.15 0.0091
2023-12-06 2023-09-30 13F/A-1 SMITH A O COM 831865209 124,989 -32,800 -20.79 8,266 -28.02 0.0062
2023-11-09 2023-09-30 13F SMITH A O COM 831865209 124,989 -32,800 8,266 0.0025
2023-08-10 2023-06-30 13F SMITH A O COM 831865209 157,789 11,451 7.83 11,484 13.48 0.0075
2023-05-11 2023-03-31 13F SMITH A O COM 831865209 146,338 -52,801 -26.51 10,119 -11.22 0.0071
2023-02-09 2022-12-31 13F SMITH A O COM 831865209 199,139 -60,246 -23.23 11,399 -9.55 0.0091
2022-11-10 2022-09-30 13F SMITH A O COM 831865209 259,385 71,082 37.75 12,601 22.38 0.0090
2022-08-10 2022-06-30 13F SMITH A O COM 831865209 188,303 5,326 2.91 10,297 -11.91 0.0077
2022-05-12 2022-03-31 13F SMITH A O COM 831865209 182,977 29,251 19.03 11,689 -11.43 0.0071
2022-02-10 2021-12-31 13F SMITH A O COM 831865209 153,726 -164,349 -51.67 13,198 -32.05 0.0071
2021-11-10 2021-09-30 13F SMITH A O COM 831865209 318,075 97,835 44.42 19,424 22.39 0.0115
2021-08-10 2021-06-30 13F SMITH A O COM 831865209 220,240 -49,392 -18.32 15,870 -12.95 0.0096
2021-05-13 2021-03-31 13F SMITH A O COM 831865209 269,632 37,829 16.32 18,230 43.46 0.0118
2021-02-11 2020-12-31 13F SMITH A O COM 831865209 231,803 -15,247 -6.17 12,707 -2.58 0.0075
2020-11-12 2020-09-30 13F SMITH A O COM 831865209 247,050 31,660 14.70 13,044 28.52 0.0085
2020-08-12 2020-06-30 13F SMITH A O COM 831865209 215,390 109,108 102.66 10,149 152.53 0.0079
2020-05-12 2020-03-31 13F SMITH A O COM 831865209 106,282 -229,525 -68.35 4,019 -74.88 0.0036
2020-02-12 2019-12-31 13F SMITH A O COM 831865209 335,807 153,357 84.05 15,999 83.81 0.0116
2019-11-08 2019-09-30 13F SMITH A O COM 831865209 182,450 -27,373 -13.05 8,704 -12.05 0.0069
2019-08-12 2019-06-30 13F SMITH A O COM 831865209 209,823 -14,695 -6.55 9,896 -17.34 0.0080
2019-05-13 2019-03-31 13F SMITH A O COM 831865209 224,518 -108,460 -32.57 11,972 -15.80 0.0115
2019-02-12 2018-12-31 13F SMITH A O COM 831865209 332,978 176,914 113.36 14,219 70.72 0.0144
2018-11-13 2018-09-30 13F SMITH A O COM 831865209 156,064 25,131 19.19 8,329 7.54 0.0074
2018-08-10 2018-06-30 13F SMITH A O COM 831865209 130,933 22,493 20.74 7,745 12.31 0.0071
2018-05-11 2018-03-31 13F SMITH A O COM 831865209 108,440 -79,149 -42.19 6,896 -40.01 0.0057
2018-02-12 2017-12-31 13F SMITH A O COM 831865209 187,589 78,496 71.95 11,496 77.30 0.0092
2017-11-13 2017-09-30 13F SMITH A O COM 831865209 109,093 31,835 41.21 6,484 48.99 0.0053
2017-08-11 2017-06-30 13F SMITH A O COM 831865209 77,258 432 0.56 4,352 10.74 0.0039
2017-05-12 2017-03-31 13F SMITH A O COM 831865209 76,826 -37,114 -32.57 3,930 -27.17 0.0035
2017-02-10 2016-12-31 13F SMITH A O COM 831865209 113,940 64,126 128.73 5,396 9.65 0.0049
2016-11-10 2016-09-30 13F SMITH A O COM 831865209 49,814 34,988 235.99 4,921 276.51 0.0046
2016-08-12 2016-06-30 13F SMITH A O COM 831865209 14,826 -2,405 -13.96 1,307 -0.61 0.0013
2016-05-13 2016-03-31 13F SMITH A O COM 831865209 17,231 -64 -0.37 1,315 -0.75 0.0015
2016-02-12 2015-12-31 13F SMITH A O COM 831865209 17,295 -44,205 -71.88 1,325 -66.95 0.0013
2015-11-13 2015-09-30 13F SMITH A O COM 831865209 61,500 33,926 123.04 4,009 102.07 0.0038
2015-08-13 2015-06-30 13F SMITH A O COM 831865209 27,574 -1,477 -5.08 1,984 4.04 0.0018
2015-05-14 2015-03-31 13F SMITH A O COM 831865209 29,051 13,510 86.93 1,907 117.20 0.0018
2015-02-17 2014-12-31 13F SMITH A O COM 831865209 15,541 -114 -0.73 878 18.65 0.0008
2014-11-14 2014-09-30 13F SMITH A O COM 831865209 15,655 -14,052 -47.30 740 -49.73 0.0006
2014-08-14 2014-06-30 13F SMITH A O COM 831865209 29,707 14,172 91.23 1,472 105.87 0.0014
2014-05-15 2014-03-31 13F SMITH A O COM 831865209 15,535 -47,154 -75.22 715 -78.85 0.0007
2014-02-14 2013-12-31 13F SMITH A O COM 831865209 62,689 -273,571 -81.36 3,381 -77.76 0.0031
2013-11-14 2013-09-30 13F SMITH A O COM 831865209 336,260 313,643 1,386.76 15,199 1,753.54 0.0142
2013-08-14 2013-06-30 13F SMITH A O COM 831865209 22,617 22,617 820 0.0008
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
(%)
2021-02-11 2020-12-31 13F SMITH A O COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-11-12 2020-09-30 13F SMITH A O COM Call 2,000 -4.76 106 7.07 n/a n/a n/a
2020-08-12 2020-06-30 13F SMITH A O COM Call 2,100 110.00 99 160.53 n/a n/a n/a
2020-05-12 2020-03-31 13F SMITH A O COM Call 1,000 -72.22 38 -77.91 n/a n/a n/a
2020-02-12 2019-12-31 13F SMITH A O COM Call 3,600 71.43 172 72.00 n/a n/a n/a
2019-11-08 2019-09-30 13F SMITH A O COM Call 2,100 16.67 100 17.65 n/a n/a n/a
2019-08-12 2019-06-30 13F SMITH A O COM Call 1,800 85 n/a n/a n/a
2019-05-13 2019-03-31 13F SMITH A O COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-02-12 2018-12-31 13F SMITH A O COM Call 1,400 -65.85 60 -72.60 n/a n/a n/a
2018-11-13 2018-09-30 13F SMITH A O COM Call 4,100 20.59 219 8.96 n/a n/a n/a
2018-08-10 2018-06-30 13F SMITH A O COM Call 3,400 13.33 201 5.24 n/a n/a n/a
2018-05-11 2018-03-31 13F SMITH A O COM Call 3,000 76.47 191 83.65 n/a n/a n/a
2018-02-12 2017-12-31 13F SMITH A O COM Call 1,700 -83.81 104 -83.33 n/a n/a n/a
2017-11-13 2017-09-30 13F SMITH A O COM Call 10,500 94.44 624 105.26 n/a n/a n/a
2017-08-11 2017-06-30 13F SMITH A O COM Call 5,400 184.21 304 213.40 n/a n/a n/a
2017-05-12 2017-03-31 13F SMITH A O COM Call 1,900 90.00 97 106.38 n/a n/a n/a
2017-02-10 2016-12-31 13F SMITH A O COM Call 1,000 47 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
(%)
2022-02-10 2021-12-31 13F SMITH A O COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-10 2021-09-30 13F SMITH A O COM Put 26,400 1,612 n/a n/a n/a
2021-02-11 2020-12-31 13F SMITH A O COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-11-12 2020-09-30 13F SMITH A O COM Put 200 -92.86 11 -91.67 n/a n/a n/a
2020-08-12 2020-06-30 13F SMITH A O COM Put 2,800 -15.15 132 5.60 n/a n/a n/a
2020-05-12 2020-03-31 13F SMITH A O COM Put 3,300 -35.29 125 -48.56 n/a n/a n/a
2020-02-12 2019-12-31 13F SMITH A O COM Put 5,100 -26.09 243 -26.14 n/a n/a n/a
2019-11-08 2019-09-30 13F SMITH A O COM Put 6,900 32.69 329 34.29 n/a n/a n/a
2019-08-12 2019-06-30 13F SMITH A O COM Put 5,200 2,500.00 245 2,127.27 n/a n/a n/a
2019-05-13 2019-03-31 13F SMITH A O COM Put 200 -80.00 11 -74.42 n/a n/a n/a
2019-02-12 2018-12-31 13F SMITH A O COM Put 1,000 -58.33 43 -66.41 n/a n/a n/a
2018-11-13 2018-09-30 13F SMITH A O COM Put 2,400 -47.83 128 -52.94 n/a n/a n/a
2018-08-10 2018-06-30 13F SMITH A O COM Put 4,600 475.00 272 433.33 n/a n/a n/a
2018-05-11 2018-03-31 13F SMITH A O COM Put 800 -81.82 51 -81.11 n/a n/a n/a
2018-02-12 2017-12-31 13F SMITH A O COM Put 4,400 144.44 270 152.34 n/a n/a n/a
2017-11-13 2017-09-30 13F SMITH A O COM Put 1,800 28.57 107 35.44 n/a n/a n/a
2017-08-11 2017-06-30 13F SMITH A O COM Put 1,400 1,300.00 79 1,480.00 n/a n/a n/a
2017-05-12 2017-03-31 13F SMITH A O COM Put 100 5 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.