Southwest Gas Holdings, Inc.
US ˙ NYSE ˙ US8448951025

SecuritySWX / Southwest Gas Holdings, Inc.
InstitutionAssetmark, Inc
Latest Disclosed Ownership3,073 shares
Latest Disclosed Value $ 267,044
Assetmark, Inc reports 1.29% increase in ownership of SWX / Southwest Gas Holdings, Inc.

On May 6, 2026 - Assetmark, Inc filed a 13F-HR form disclosing ownership of 3,073 shares of Southwest Gas Holdings, Inc. (US:SWX) valued at $267,044 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 3,034 shares of Southwest Gas Holdings, Inc.. This represents a change in shares of 1.29% during the quarter. The current value of the position is $263,448 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)
2026-05-06 2026-03-31 13F SOUTHWEST GAS HLDGS COM 844895102 3,073 39 1.29 267 10.33 0.0005
2026-01-23 2025-12-31 13F SOUTHWEST GAS HLDGS COM 844895102 3,034 -125 -3.96 243 -2.02 0.0005
2025-11-06 2025-09-30 13F SOUTHWEST GAS HLDGS COM 844895102 3,159 56 1.80 247 7.39 0.0005
2025-08-04 2025-06-30 13F SOUTHWEST GAS HLDGS COM 844895102 3,103 671 27.59 231 32.18 0.0005
2025-05-06 2025-03-31 13F SOUTHWEST GAS HLDGS COM 844895102 2,432 -290 -10.65 175 -9.37 0.0005
2025-02-06 2024-12-31 13F SOUTHWEST GAS HLDGS COM 844895102 2,722 -69 -2.47 192 -6.34 0.0005
2024-11-01 2024-09-30 13F SOUTHWEST GAS HLDGS COM 844895102 2,791 -229 -7.58 206 -3.30 0.0006
2024-08-13 2024-06-30 13F SOUTHWEST GAS HLDGS COM 844895102 3,020 246 8.87 213 0.47 0.0007
2024-05-07 2024-03-31 13F SOUTHWEST GAS HLDGS COM 844895102 2,774 -378 -11.99 211 6.03 0.0007
2024-02-09 2023-12-31 13F SOUTHWEST GAS HLDGS COM 844895102 3,152 581 22.60 200 28.39 0.0007
2023-10-27 2023-09-30 13F SOUTHWEST GAS HLDGS COM 844895102 2,571 369 16.76 155 10.71 0.0006
2023-08-11 2023-06-30 13F SOUTHWEST GAS HLDGS INC COM COM 844895102 2,202 645 41.43 140 44.33 0.0005
2023-05-05 2023-03-31 13F SOUTHWEST GAS HLDGS INC COM COM 844895102 1,557 309 24.76 97 25.97 0.0004
2023-02-10 2022-12-31 13F SOUTHWEST GAS HLDGS COM 844895102 1,248 300 31.65 77 16.67 0.0003
2022-11-01 2022-09-30 13F SOUTHWEST GAS HLDGS COM 844895102 948 321 51.20 66 20.00 0.0003
2022-08-03 2022-06-30 13F SOUTHWEST GAS HLDGS INC COM COM 844895102 627 369 143.02 55 175.00 0.0002
2022-05-13 2022-03-31 13F SOUTHWEST GAS HLDGS INC COM COM 844895102 258 258 20 0.0001
2017-09-14 2016-03-31 13F/A-1 SOUTHWEST GAS CORP COM COM 844895102 0 -185 -100.00 0 -100.00
2017-09-14 2015-12-31 13F/A-1 SOUTHWEST GAS CORP COM COM 844895102 185 -13 -6.57 10 -16.67 0.0002
2016-02-12 2015-12-31 13F SOUTHWEST GAS CORP COM COM 844895102 185 -13 10
2016-01-05 2015-09-30 13F/A-1 SOUTHWEST GAS CORP COM COM 844895102 198 -1,602 -89.00 12 -87.50 0.0003
2015-11-10 2015-09-30 13F SOUTHWEST GAS CORP COM COM 844895102 198 12
2015-08-13 2015-06-30 13F SOUTHWEST GAS CORP COM COM 844895102 1,800 1,800 96 0.0020
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.