Southwest Gas Holdings, Inc.
US ˙ NYSE ˙ US8448951025

SecuritySWX / Southwest Gas Holdings, Inc.
InstitutionAmalgamated Bank
Latest Disclosed Ownership27,790 shares
Latest Disclosed Value $ 2,415
Amalgamated Bank reports 2.67% increase in ownership of SWX / Southwest Gas Holdings, Inc.

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 27,790 shares of Southwest Gas Holdings, Inc. (US:SWX) valued at $2,414,951 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 27,068 shares of Southwest Gas Holdings, Inc.. This represents a change in shares of 2.67% during the quarter. The current value of the position is $2,465,529 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)
2026-05-08 2026-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 27,790 722 2.67 2 0.00 0.0185
2026-02-05 2025-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 27,068 -1,081 -3.84 2 0.00 0.0156
2025-10-29 2025-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 28,149 1,563 5.88 2 100.00 0.0158
2025-08-04 2025-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 26,586 -350 -1.30 2 0.00 0.0153
2025-04-25 2025-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 26,936 -676 -2.45 2 0.00 0.0165
2025-02-04 2024-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 27,612 0 0.00 2 -50.00 0.0160
2024-10-30 2024-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 27,612 -1,524 -5.23 2 0.00 0.0168
2024-08-12 2024-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 29,136 -2,442 -7.73 2 0.00 0.0175
2024-04-23 2024-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 31,578 -2,973 -8.60 2 0.00 0.0206
2024-02-06 2023-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 34,551 -630 -1.79 2 0.00 0.0175
2023-11-08 2023-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 35,181 -4,025 -10.27 2 0.00 0.0181
2023-08-11 2023-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 39,206 -657 -1.65 2 0.00 0.0202
2023-05-02 2023-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 39,863 -2,588 -6.10 2 0.00 0.0212
2023-02-10 2022-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 42,451 681 1.63 3 -99.93 0.0234
2022-11-09 2022-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 41,770 -1,619 -3.73 2,913 -22.90 0.0281
2022-08-15 2022-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 43,389 699 1.64 3,778 13.05 0.0352
2022-08-25 2022-03-31 13F/A-1 SOUTHWEST GAS HOLDINGS COM 844895102 42,690 2,498 6.22 3,342 18.72 0.0260
2022-06-30 2022-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 42,690 2,498 3,342 0.0265
2022-02-15 2021-12-31 13F/A-1 SOUTHWEST GAS HOLDINGS COM 844895102 40,192 1,051 2.69 2,815 7.52 0.0208
2022-02-15 2021-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 40,192 1,051 2,815 0.0208
2021-10-29 2021-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 39,141 -3,568 -8.35 2,618 -7.39 0.0221
2021-08-16 2021-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 42,709 37,336 694.88 2,827 666.12 0.0227
2021-05-13 2021-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 5,373 -293 -5.17 369 7.27 0.0138
2021-02-12 2020-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 5,666 66 1.18 344 -2.55 0.0130
2020-10-30 2020-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 5,600 16 0.29 353 -8.55 0.0153
2020-08-10 2020-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 5,584 -3,508 -38.58 386 -38.92 0.0179
2020-05-13 2020-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 9,092 -320 -3.40 632 -11.61 0.0155
2020-02-13 2019-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 9,412 998 11.86 715 -6.66 0.0132
2019-11-13 2019-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 8,414 -179 -2.08 766 -0.52 0.0161
2019-08-14 2019-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 8,593 721 9.16 770 18.83 0.0180
2019-05-15 2019-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 7,872 810 11.47 648 20.00 0.0157
2019-02-15 2018-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 7,062 17 0.24 540 -3.05 0.0153
2018-11-14 2018-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 7,045 -12 -0.17 557 3.53 0.0138
2018-07-18 2018-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 7,057 288 4.25 538 17.47 0.0131
2018-05-22 2018-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 6,769 -100 -1.46 458 -17.18 0.0121
2018-02-13 2017-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 6,869 460 7.18 553 11.27 0.0150
2017-11-09 2017-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 6,409 -339 -5.02 497 0.81 0.0155
2017-08-10 2017-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 6,748 106 1.60 493 -10.53 0.0162
2017-05-12 2017-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 6,642 8 0.12 551 8.46 0.0274
2017-02-14 2016-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 6,634 761 12.96 508 23.90 0.0230
2016-11-15 2016-09-30 13F/A-1 SOUTHWEST GAS COM 844895102 5,873 4 0.07 410 -3.98 0.0238
2016-08-16 2016-06-30 13F SOUTHWEST GAS COM 844895102 5,869 840 16.70 427 29.00 0.0247
2016-05-11 2016-03-31 13F SOUTHWEST GAS COM 844895102 5,029 487 10.72 331 31.87 0.0323
2016-02-10 2015-12-31 13F SOUTHWEST GAS COM 844895102 4,542 -345 -7.06 251 -11.93 0.0310
2015-11-04 2015-09-30 13F SOUTHWEST GAS COM 844895102 4,887 53 1.10 285 10.89 0.0299
2015-07-10 2015-06-30 13F SOUTHWEST GAS COM 844895102 4,834 4,834 257 0.0252
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.