Southwest Gas Holdings, Inc.
US ˙ NYSE ˙ US8448951025

SecuritySWX / Southwest Gas Holdings, Inc.
InstitutionNatixis Advisors, L.p.
Latest Disclosed Ownership11,581 shares
Latest Disclosed Value $ 1,006
Natixis Advisors, L.p. reports 6.37% increase in ownership of SWX / Southwest Gas Holdings, Inc.

On May 13, 2026 - Natixis Advisors, L.p. filed a 13F-HR form disclosing ownership of 11,581 shares of Southwest Gas Holdings, Inc. (US:SWX) valued at $1,006,389 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 10,887 shares of Southwest Gas Holdings, Inc.. The current value of the position is $992,839 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)
2026-05-13 2026-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 11,581 694 6.37 1 0.0014
2026-02-10 2025-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 10,887 10,887 1 0.0012
2025-11-13 2025-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 0 -10,772 -100.00 0 0.0000
2025-08-13 2025-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 10,772 -911 -7.80 1 0.0013
2025-05-08 2025-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 11,683 660 5.99 1 0.0016
2025-02-10 2024-12-31 13F SOUTHWEST GAS HLDGS COM 844895102 11,023 -621 -5.33 1 0.0015
2024-11-06 2024-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 11,644 365 3.24 1 0.0017
2024-08-01 2024-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 11,279 -150 -1.31 1 0.0017
2024-04-25 2024-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 11,429 11,429 1 0.0020
2023-11-13 2023-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 0 -91,973 -100.00 0 -100.00
2023-08-15 2023-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 91,973 10,555 12.96 6 0.00 0.0181
2023-05-11 2023-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 81,418 1,289 1.61 5 25.00 0.0175
2023-01-27 2022-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 80,129 40,180 100.58 5 -99.86 0.0187
2022-11-14 2022-09-30 13F SOUTHWEST GAS HLDGS COM 844895102 39,949 -53,507 -57.25 2,787 -65.75 0.0118
2022-08-12 2022-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 93,456 10,417 12.54 8,138 25.18 0.0358
2022-05-12 2022-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 83,039 9,287 12.59 6,501 25.82 0.0248
2022-02-08 2021-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 73,752 84 0.11 5,167 4.87 0.0197
2021-11-15 2021-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 73,668 22,305 43.43 4,927 44.91 0.0203
2021-08-12 2021-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 51,363 51,363 3,400 0.0159
2020-11-12 2020-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 0 -62,988 -100.00 0 -100.00
2020-08-11 2020-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 62,988 -7,884 -11.12 4,350 -11.76 0.0289
2020-04-27 2020-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 70,872 5,800 8.91 4,930 -0.26 0.0402
2020-02-10 2019-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 65,072 -5,953 -8.38 4,943 -23.55 0.0349
2019-11-12 2019-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 71,025 673 0.96 6,466 2.55 0.0513
2019-08-12 2019-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 70,352 -4,219 -5.66 6,305 2.79 0.0515
2019-05-15 2019-03-31 13F/A-1 SOUTHWEST GAS HOLDINGS COM 844895102 74,571 -2,208 -2.88 6,134 4.44 0.0537
2019-05-15 2019-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 74,571 -2,208 6,134
2019-02-13 2018-12-31 13F/A-1 SOUTHWEST GAS HOLDINGS COM 844895102 76,779 -2,870 -3.60 5,873 -6.69 0.0580
2019-02-13 2018-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 76,779 -2,870 5,873
2018-11-13 2018-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 79,649 9,972 14.31 6,294 18.44 0.0554
2018-08-14 2018-06-30 13F/A-1 SOUTHWEST GAS HOLDINGS COM 844895102 69,677 69,677 5,314 0.0508
2018-08-14 2018-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 69,677 5,314 0.0508
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.