Southwest Gas Holdings, Inc.
US ˙ NYSE ˙ US8448951025

SecuritySWX / Southwest Gas Holdings, Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership670,343 shares
Latest Disclosed Value $ 58,252,910
Morgan Stanley reports 46.17% increase in ownership of SWX / Southwest Gas Holdings, Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 670,343 shares of Southwest Gas Holdings, Inc. (US:SWX) valued at $58,252,807 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 458,601 shares of Southwest Gas Holdings, Inc.. This represents a change in shares of 46.17% during the quarter. The current value of the position is $59,472,831 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)
2026-05-15 2026-03-31 13F SOUTHWEST GAS HLDGS COM 844895102 670,343 211,742 46.17 58,253 58.74 0.0035
2026-05-27 2025-12-31 13F/A-1 SOUTHWEST GAS HLDGS COM 844895102 458,601 -50,307 -9.89 36,697 -7.95 0.0022
2026-02-13 2025-12-31 13F SOUTHWEST GAS HLDGS COM 844895102 458,601 -50,307 36,697 0.0022
2026-05-27 2025-09-30 13F/A-1 SOUTHWEST GAS HLDGS COM 844895102 508,908 -65,404 -11.39 39,868 -6.68 0.0024
2025-11-14 2025-09-30 13F SOUTHWEST GAS HLDGS COM 844895102 508,908 -65,404 39,868 0.0024
2025-08-15 2025-06-30 13F SOUTHWEST GAS HLDGS COM 844895102 574,312 85,972 17.60 42,723 21.85 0.0028
2025-05-15 2025-03-31 13F SOUTHWEST GAS HLDGS COM 844895102 488,340 26,638 5.77 35,063 7.40 0.0025
2025-05-15 2024-12-31 13F/A-1 SOUTHWEST GAS HLDGS COM 844895102 461,702 -18,601 -3.87 32,647 -7.85 0.0023
2025-02-14 2024-12-31 13F SOUTHWEST GAS HLDGS COM 844895102 461,702 -18,601 32,647 0.0023
2025-05-14 2024-09-30 13F/A-2 SOUTHWEST GAS HLDGS COM 844895102 480,303 87,632 22.32 35,427 28.19 0.0026
2025-02-14 2024-09-30 13F/A-1 SOUTHWEST GAS HLDGS COM 844895102 480,303 87,632 35,427 0.0026
2024-11-14 2024-09-30 13F SOUTHWEST GAS HLDGS COM 844895102 480,303 87,632 35,427 0.0003
2025-05-14 2024-06-30 13F/A-2 SOUTHWEST GAS HLDGS COM 844895102 392,671 2,470 0.63 27,636 -6.97 0.0021
2024-10-17 2024-06-30 13F/A-1 SOUTHWEST GAS HLDGS COM 844895102 392,671 2,470 27,636 0.0021
2024-08-14 2024-06-30 13F SOUTHWEST GAS HLDGS COM 844895102 392,671 2,470 27,636 0.0021
2024-10-17 2024-03-31 13F/A-2 SOUTHWEST GAS HLDGS COM 844895102 390,201 -69,179 -15.06 29,706 2.08 0.0024
2024-08-16 2024-03-31 13F/A-1 SOUTHWEST GAS HLDGS COM 844895102 390,201 -69,179 29,706 0.0003
2024-05-15 2024-03-31 13F SOUTHWEST GAS HLDGS COM 844895102 390,201 -69,179 29,706 0.0024
2024-08-16 2023-12-31 13F/A-1 SOUTHWEST GAS HLDGS COM 844895102 459,380 -503,941 -52.31 29,102 -49.99 0.0026
2024-02-13 2023-12-31 13F SOUTHWEST GAS HLDGS COM 844895102 459,380 -503,941 29,102 0.0026
2023-11-15 2023-09-30 13F SOUTHWEST GAS HLDGS COM 844895102 963,321 -5,527 -0.57 58,194 -5.63 0.0059
2023-08-14 2023-06-30 13F SOUTHWEST GAS HLDGS COM 844895102 968,848 -5,013 -0.51 61,667 1.40 0.0061
2023-05-15 2023-03-31 13F SOUTHWEST GAS HLDGS COM 844895102 973,861 91,803 10.41 60,818 11.43 0.0065
2023-02-14 2022-12-31 13F SOUTHWEST GAS HLDGS COM 844895102 882,058 524,625 146.78 54,582 118.93 0.0062
2022-11-14 2022-09-30 13F SOUTHWEST GAS HLDGS COM 844895102 357,433 177,608 98.77 24,931 59.21 0.0034
2022-10-27 2022-06-30 13F/A-1 SOUTHWEST GAS HLDGS COM 844895102 179,825 -32,793 -15.42 15,659 -5.94 0.0020
2022-08-15 2022-06-30 13F SOUTHWEST GAS HLDGS COM 844895102 179,825 -32,793 15,659 0.0020
2022-10-27 2022-03-31 13F/A-1 SOUTHWEST GAS HLDGS COM 844895102 212,618 -1,609 -0.75 16,647 10.94 0.0022
2022-05-13 2022-03-31 13F SOUTHWEST GAS HLDGS COM 844895102 212,618 -1,609 16,647 0.0022
2022-02-14 2021-12-31 13F SOUTHWEST GAS HLDGS COM 844895102 214,227 -55,565 -20.60 15,006 -16.83 0.0019
2021-11-15 2021-09-30 13F SOUTHWEST GAS HLDGS COM 844895102 269,792 79,063 41.45 18,043 42.93 0.0024
2021-08-23 2021-06-30 13F/A-1 SOUTHWEST GAS HLDGS COM 844895102 190,729 47,675 33.33 12,624 28.42 0.0017
2021-08-16 2021-06-30 13F SOUTHWEST GAS HLDGS COM 844895102 190,729 47,675 12,624 0.0003
2021-05-17 2021-03-31 13F SOUTHWEST GAS HLDGS COM 844895102 143,054 -94,386 -39.75 9,830 -31.85 0.0014
2021-02-16 2020-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 237,440 168,159 242.72 14,424 229.99 0.0022
2020-11-13 2020-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 69,281 -6,368 -8.42 4,371 -16.31 0.0008
2020-08-14 2020-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 75,649 -2,361 -3.03 5,223 -3.76 0.0012
2020-05-26 2020-03-31 13F/A-1 SOUTHWEST GAS HOLDINGS COM 844895102 78,010 -171,522 -68.74 5,427 -71.37 0.0015
2020-05-15 2020-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 78,010 -171,522 5,427 416.9067
2020-02-14 2019-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 249,532 126,423 102.69 18,958 69.15 0.0044
2019-11-14 2019-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 123,109 58,649 90.99 11,208 94.01 0.0030
2019-08-14 2019-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 64,460 -5,737 -8.17 5,777 0.05 0.0015
2019-05-15 2019-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 70,197 -72,324 -50.75 5,774 -47.04 0.0016
2019-02-14 2018-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 142,521 -40,767 -22.24 10,903 -24.73 0.0033
2019-04-23 2018-09-30 13F/A-2 SOUTHWEST GAS HOLDINGS COM 844895102 183,288 -29,911 -14.03 14,485 -10.92 0.0036
2018-11-20 2018-09-30 13F/A-1 SOUTHWEST GAS HOLDINGS COM 844895102 183,288 0 14,485 0.0036
2018-11-14 2018-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 183,288 -29,911 14,485
2019-04-23 2018-06-30 13F/A-1 SOUTHWEST GAS HOLDINGS COM 844895102 213,199 -35,645 -14.32 16,260 -3.39 0.0044
2018-08-14 2018-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 213,199 -35,645 16,260
2019-04-23 2018-03-31 13F/A-1 SOUTHWEST GAS HOLDINGS COM 844895102 248,844 16,683 7.19 16,830 -9.93 0.0047
2018-05-14 2018-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 248,844 16,683 16,830
2019-04-23 2017-12-31 13F/A-1 SOUTHWEST GAS HOLDINGS COM 844895102 232,161 14,757 6.79 18,685 10.73 0.0051
2018-02-14 2017-12-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 232,161 14,757 18,685
2017-11-14 2017-09-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 217,404 51,983 31.42 16,875 39.64 0.0051
2017-08-11 2017-06-30 13F SOUTHWEST GAS HOLDINGS COM 844895102 165,421 -106,188 -39.10 12,085 -46.33 0.0037
2017-05-22 2017-03-31 13F/A-1 SOUTHWEST GAS HOLDINGS COM 844895102 271,609 -65,464 -19.42 22,518 -12.81 0.0069
2017-05-12 2017-03-31 13F SOUTHWEST GAS HOLDINGS COM 844895102 271,609 22,518
2017-02-22 2016-12-31 13F/A-1 SOUTHWEST GAS COM 844895102 337,073 176,097 109.39 25,826 129.63 0.0085
2017-02-13 2016-12-31 13F SOUTHWEST GAS COM 844895102 337,073 25,826
2016-11-10 2016-09-30 13F SOUTHWEST GAS COM 844895102 160,976 80,735 100.62 11,247 78.07 0.0038
2016-08-12 2016-06-30 13F SOUTHWEST GAS COM 844895102 80,241 -16,420 -16.99 6,316 -0.75 0.0023
2016-05-12 2016-03-31 13F SOUTHWEST GAS COM 844895102 96,661 32,976 51.78 6,364 81.16 0.0024
2016-02-09 2015-12-31 13F SOUTHWEST GAS COM 844895102 63,685 -77,414 -54.87 3,513 -57.31 0.0013
2016-02-08 2015-09-30 13F/A-1 SOUTHWEST GAS COM 844895102 141,099 14,305 11.28 8,230 22.00 0.0030
2015-11-09 2015-09-30 13F SOUTHWEST GAS COM 844895102 141,099 8,230
2015-08-12 2015-06-30 13F SOUTHWEST GAS COM 844895102 126,794 11,375 9.86 6,746 0.48 0.0023
2015-05-14 2015-03-31 13F SOUTHWEST GAS COM 844895102 115,419 8,449 7.90 6,714 1.56 0.0025
2015-02-13 2014-12-31 13F SOUTHWEST GAS COM 844895102 106,970 -9,957 -8.52 6,611 16.37 0.0024
2014-12-16 2014-09-30 13F/A-1 SOUTHWEST GAS COM 844895102 116,927 26,699 29.59 5,681 17.79 0.0022
2014-11-14 2014-09-30 13F SOUTHWEST GAS COM 844895102 116,927 5,681
2014-05-13 2014-03-31 13F SOUTHWEST GAS COM 844895102 90,228 26,906 42.49 4,823 36.24 0.0020
2014-02-13 2013-12-31 13F SOUTHWEST GAS COM 844895102 63,322 -52,186 -45.18 3,540 -38.71 0.0015
2013-11-13 2013-09-30 13F SOUTHWEST GAS CORP COM ST COM 844895102 115,508 -136,119 -54.10 5,776 -50.94 0.0027
2013-08-08 2013-06-30 13F SOUTHWEST GAS CORP COM ST COM 844895102 251,627 251,627 11,774 0.0059
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.