Zimmer Partners, LP — 13F Holdings & Portfolio

CIK 1565854 · latest 13F-HR filed 2026-08-14

Zimmer Partners, LP manages $4.34B in 13F-reported U.S. long-equity assets across 122 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are WELL (5.87%), NI (4.68%), ES (4.48%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 38 new positions and exited 46; 35 existing positions rose in reported value and 33 fell.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

AUM

$4.34B

Long-equity book

Holdings

122

Distinct positions

Period

2026-06-30

Filed 2026-08-14

Q/Q Activity

+38 / −46 / ↑35 / ↓33

vs 2026-03-31

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q2 26

WELL6.0% · +0%NI4.8% · -17%ES4.6% · -20%KGS4.5% · +6%XEL4.4% · -12%TRGP4.2% · -18%PCG3.9% · +54%MAIR3.8% · new PPL3.4% · new KMI3.4% · -22%ADC3.3% · -44%FPS3.0% · +16%LNG2.7% · +753%SRE2.0% · +31%MGEE1.9% · new IDA1.6% · -36%JAN1.5% · +274%PH1.4% · +146%CTRE1.4% · -1%GEV1.2% · +487%ETR1.2% · -52%WM1.2% · +96%AZO1.1% · +203%BKV1.1% · -14%CNM1.1% · +117%NHP1.1% · new YORW1.0% · +94%DLR1.0% · new MOD1.0% · new KNTK1.0% · +529%HESM0.9% · +233%DVN0.9% · new MTZ0.8% · new CRH0.8% · -18%HTO0.7% · -49%AHR0.7% · new ROL0.7% · +367%PNR0.7% · +88%SARO0.7% · +9%EROC0.6% · new RYAN0.6% · -17%GPC0.6% · +80%ITT0.6% · +160%GNRC0.6% · +58%FRVO0.6% · new USAR0.6% · -2%CMI0.6% · +36%BLDR0.6% · -21%PNW0.6% · -56%XE0.5% · new EME0.5% · -21%LGN0.5% · new SYY0.5% · +212%JRVR0.5% · +1%WULF0.5% · +502%RBC0.5% · new CPAY0.4% · -10%LOAR0.4% · -65%PRIM0.4% · new VRT0.4% · new

Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.

Sector mix

% of 13F value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q1 26 → Q2 26

Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.

13F assets and positions

4 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 43%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People

Assets Under Management

$5.24B

Discretionary

$5.24B

Employees

Accounts

Address

9 W. 57TH STREET, 33RD FLOOR
NEW YORK, NY 10019-2601

Phone

(212) 371-8688

Website

www.linkedin.com/company/zimmer-partners-lp

Name	Title / Status	Ownership	Type
ADLER, NEIL Control	CHIEF FINANCIAL OFFICER	Less than 5%	Individual
NAPOLITANO, JELENA, MADUNIC Control	GENERAL COUNSEL AND CHIEF COMPLIANCE OFFICER	Less than 5%	Individual
THE STUART ZIMMER REVOCABLE TRUST Control	MEMBER	75% or more	Domestic Entity
ZIMMER FINANCIAL SERVICES GROUP LLC Control	SOLE MEMBER	75% or more	Domestic Entity
ZIMMER FINANCIAL SERVICES GROUP LLC Control	DIRECT OWNER	75% or more	Domestic Entity
ZIMMER PARTNERS GP, LLC Control	GENERAL PARTNER	Less than 5%	Domestic Entity
ZIMMER, STUART, JASON Control	CHIEF EXECUTIVE OFFICER	Less than 5%	Individual
ZIMMER, STUART, JASON Control	TRUSTEE	75% or more	Individual

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

Top Adds (vs prior quarter)

CHENIERE ENERGY INC$96.5M +618.2%
FORGENT POWER SOLUTIONS INC$69.8M +122.2%
PG&E CORP$53.4M +47.4%
KODIAK GAS SVCS INC$51.2M +36.9%
JANUS LIVING INC$48.2M +355.9%

Show all 35 →

Top Trims

AGREE RLTY CORP-$108.9M -43.8%
ENTERGY CORP NEW-$52.6M -50.5%
DUKE ENERGY CORP NEW-$52.6M -91.7%
KINDER MORGAN INC DEL-$50.2M -26.1%
SOUTHWEST GAS HLDGS INC-$43.1M -81.8%

Show all 33 →

New Positions

Show all 38 →

Exited Positions

Show all 46 →

Loading…

#	Issuer	Symbol	CUSIP	Value	Δ

Zimmer Partners, LP Holdings (2026-06-30)

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

#	Issuer	Symbol	CUSIP	Value	Weight	Shares	Type
1	WELLTOWER INC	WELL	95040Q104	$255.1M	5.87%	1,123,925	SH
2	NISOURCE INC	NI	65473P105	$203.4M	4.68%	4,277,259	SH
3	EVERSOURCE ENERGY	ES	30040W108	$194.5M	4.48%	2,691,701	SH
4	KODIAK GAS SVCS INC	KGS	50012A108	$190.1M	4.38%	2,530,838	SH
5	XCEL ENERGY INC	XEL	98389B100	$186.6M	4.30%	2,323,610	SH
6	TARGA RES CORP	TRGP	87612G101	$175.5M	4.04%	654,500	SH
7	PG&E CORP	PCG	69331C108	$166.3M	3.83%	9,884,115	SH
8	MADISON AIR SOLUTIONS CORP	MAIR	55658T105	$161.9M	3.73%	4,150,810	SH
9	PPL CORP	PPL	69351T106	$142.6M	3.28%	3,922,800	SH
10	KINDER MORGAN INC DEL	KMI	49456B101	$142.1M	3.27%	4,445,100	SH
11	AGREE RLTY CORP	ADC	008492100	$139.6M	3.21%	1,843,300	SH
12	FORGENT POWER SOLUTIONS INC	FPS	34631F102	$126.9M	2.92%	2,271,217	SH
13	CHENIERE ENERGY INC	LNG	16411R208	$112.1M	2.58%	469,000	SH
14	SEMPRA	SRE	816851109	$85.2M	1.96%	918,800	SH
15	MGE ENERGY INC	MGEE	55277P104	$81.5M	1.88%	1,000,000	SH
16	IDACORP INC	IDA	451107106	$69.7M	1.60%	460,562	SH
17	JANUS LIVING INC	JAN	471024109	$61.8M	1.42%	2,150,000	SH
18	PARKER-HANNIFIN CORP	PH	701094104	$60.2M	1.39%	61,500	SH
19	CARETRUST REIT INC	CTRE	14174T107	$59.4M	1.37%	1,471,155	SH
20	GE VERNOVA INC	GEV	36828A101	$51.7M	1.19%	44,000	SH
21	ENTERGY CORP NEW	ETR	29364G103	$51.7M	1.19%	450,000	SH
22	WASTE MGMT INC DEL	WM	94106L109	$50.1M	1.15%	225,000	SH
23	AUTOZONE INC	AZO	053332102	$48.4M	1.11%	15,150	SH
24	BKV CORP	BKV	05603J108	$45.8M	1.05%	1,673,167	SH
25	CORE & MAIN INC	CNM	21874C102	$45.0M	1.04%	933,357	SH
26	NATIONAL HEALTHCARE PPTYS IN	NHP	42226B501	$44.4M	1.02%	3,032,511	SH
27	YORK WTR CO	YORW	987184108	$43.5M	1.00%	1,419,877	SH
28	DIGITAL RLTY TR INC	DLR	253868103	$42.7M	0.98%	237,500	SH
29	MODINE MFG CO	MOD	607828100	$42.4M	0.98%	158,830	SH
30	KINETIK HOLDINGS INC	KNTK	02215L209	$40.5M	0.93%	838,050	SH
31	PG&E CORP Call	PCG	69331C108	$37.8M	0.87%	2,250,000	SH
32	HESS MIDSTREAM LP	HESM	428103105	$37.5M	0.86%	997,643	SH
33	DEVON ENERGY CORP NEW	DVN	25179M103	$36.4M	0.84%	880,900	SH
34	MASTEC INC	MTZ	576323109	$35.4M	0.81%	85,000	SH
35	CRH PLC	CRH	G25508105	$35.3M	0.81%	330,000	SH
36	H2O AMERICA	HTO	784305104	$31.2M	0.72%	513,500	SH
37	AMERICAN HEALTHCARE REIT INC	AHR	398182303	$29.5M	0.68%	565,372	SH
38	ROLLINS INC	ROL	775711104	$29.2M	0.67%	700,000	SH
39	PENTAIR PLC	PNR	G7S00T104	$28.7M	0.66%	375,000	SH
40	STANDARDAERO INC	SARO	85423L103	$27.8M	0.64%	930,200	SH
41	EROCK INC	EROC	296013105	$27.4M	0.63%	1,891,745	SH
42	RYAN SPECIALTY HOLDINGS INC	RYAN	78351F107	$27.4M	0.63%	725,000	SH
43	GENUINE PARTS CO	GPC	372460105	$26.5M	0.61%	225,000	SH
44	ITT INC	ITT	45073V108	$25.7M	0.59%	130,000	SH
45	GENERAC HLDGS INC	GNRC	368736104	$25.3M	0.58%	86,300	SH
46	FERVO ENERGY CO	FRVO	31556C106	$24.7M	0.57%	845,000	SH
47	USA RARE EARTH INC	USAR	91733P107	$24.4M	0.56%	1,132,220	SH
48	CUMMINS INC	CMI	231021106	$24.3M	0.56%	34,100	SH
49	BUILDERS FIRSTSOURCE INC	BLDR	12008R107	$23.5M	0.54%	262,500	SH
50	PINNACLE WEST CAP CORP	PNW	723484101	$23.3M	0.54%	217,555	SH

Filing History

Period	Filed	AUM	Holdings	Accession
2026-06-30	2026-08-14	$4.34B	122	0001565854-26-000003
2026-03-31	2026-05-15	$4.15B	127	0001565854-26-000002
2025-12-31	2026-02-17	$3.80B	119	0001565854-26-000001
2025-09-30	2025-11-14	$4.63B	148	0001565854-25-000005

Filer Information

Address

9 WEST 57TH STREET
33RD FLOOR
NEW YORK, NY 10019

Phone

(212) 440-0770

Filing Manager

Zimmer Partners, LP

NEW YORK, NY

Signatory

Jelena Napolitano

General Counsel