PARNX Mutual Fund

NAV$54.99

AUM$618M

TER0.80%

Holdings45

See how much of PARNX you already own

Just $25 once·$99/mo·Download sample

X-ray my portfolio free

PARNX Mutual Fund

NAV$54.99

Parnassus Mid Cap Growth Fund Investor Class

AUM$618M

TER0.80%

Holdings45

See how much of PARNX you already own

Just $25 once·$99/mo·Download sample

X-ray my portfolio free

Overview Performance Chart Dividends Top Holdings All Holdings Sectors Geography Similar Compare Overlap

Showing top 45 of 45 holdings · as of Sep 30, 2026

PARNX holdings, by weight
#	Ticker	Name	Weight	Cumulative	Shares	Mkt value	Sector	Industry
1	TER	Teradyne IncInfo Tech · Semiconductors	3.90%	3.9%	78,023	$31.28M	Info Tech	Semiconductors
2	DDOG	Datadog Inc. Class AInfo Tech · Software	3.81%	7.7%	111,670	$30.58M	Info Tech	Software
Sector and industry · Pro
3	SNOW	Snowflake Inc	3.77%	11.5%	89,028	$30.23M
4	NTRA	Natera Inc	3.60%	15.1%	69,888	$28.89M
5	—	Cloudflare Inc (180 Day Lockup)	3.46%	18.5%	79,920	$27.75M
6	GWW	Ww Grainger Inc.	3.29%	21.8%	21,178	$26.38M
7	ROK	Rockwell Automation	3.29%	25.1%	60,648	$26.40M
8	MPWR	Monolithic Power Systems Inc	2.94%	28.1%	17,481	$23.55M
9	HLT	Hilton Worldwide Holdings, Inc.	2.86%	30.9%	72,081	$22.93M
10	HOOD	Robinhood Markets Inc - A	2.77%	33.7%	197,504	$22.22M
11	PWR	Quanta Services Inc	2.76%	36.4%	34,465	$22.14M
12	HUBB	Hubbell Inc. Class B	2.63%	39.1%	46,509	$21.10M
13	A	Agilent Technologies Inc	2.59%	41.7%	120,428	$20.75M
14	GWRE	Guidewire Software Inc	2.54%	44.2%	142,809	$20.36M
15	—	Waste Connections Inc Common Stock Cad 0	2.48%	46.7%	129,468	$19.93M
16	TWST	Twist Bioscience Corp.	2.46%	49.1%	102,214	$19.75M
17	DASH	Doordash Inc	2.43%	51.6%	106,019	$19.46M
18	KLAC	KLA Corp.	2.38%	54.0%	98,042	$19.11M
19	RVMD	Revolution Medicines Inc	2.33%	56.3%	91,154	$18.71M
20	LITE	Lumentum Holdings Inc	2.18%	58.5%	18,019	$17.50M
21	SARO	Standardaero Inc	2.18%	60.6%	821,004	$17.53M
22	TT	Trane Technologies Plc -	2.10%	62.8%	37,356	$16.88M
23	IDXX	Idexx Laboratories Inc.	2.06%	64.8%	31,685	$16.55M
24	ODFL	Old Dominion Freight Line Inc.	2.02%	66.8%	93,259	$16.21M
25	PTC	Ptc Inc	2.02%	68.8%	115,233	$16.17M
26	FIX	Comfort Systems USA Inc.	1.99%	70.8%	9,675	$16.00M
27	EW	Edwards Lifesciences Corp	1.95%	72.8%	181,432	$15.66M
28	USFD	US Foods Holding Corp	1.93%	74.7%	168,053	$15.50M
29	—	Viking Holdings Limited	1.93%	76.7%	198,126	$15.52M
30	—	Liberty Media Formula One Corp C	1.90%	78.6%	164,578	$15.21M
31	—	Cadence Design	1.87%	80.4%	45,488	$15.02M
32	VMC	Vulcan Materials Co.	1.80%	82.2%	58,888	$14.41M
33	MELI	Mercadolibre Inc	1.79%	84.0%	8,330	$14.40M
34	WMB	Williams Cos. Inc.	1.78%	85.8%	210,658	$14.32M
35	ALAB	Astera Labs Inc -	1.67%	87.5%	37,675	$13.41M
36	—	Roivant Sciences Ltd. Common Shares	1.65%	89.1%	361,537	$13.22M
37	SNDK	Sandisk Corp.	1.57%	90.7%	7,257	$12.63M
38	MSCI	Msci Inc. Class A	1.40%	92.1%	20,876	$11.25M
39	MDLN	Medline Inc	1.39%	93.5%	320,499	$11.12M
40	ARES	Ares Management Corp	1.35%	94.8%	93,372	$10.85M
41	DKS	Dick's Sporting Goods Inc	1.34%	96.2%	80,144	$10.76M
42	—	Rocket Lab Corp	1.19%	97.4%	136,818	$9.53M
43	PODD	Insulet Corp	1.09%	98.4%	66,754	$8.71M
44	—	Reddit Inc Series C Pc Pp	0.78%	99.2%	44,092	$6.28M
45	—	Cash	0.76%	100.0%	6,077,403	$6.08M

Not reported for this fund: share changes.

FundXLS Pro

See every sector, industry and share-change value

X-ray every fund you own at once, ETFs and mutual funds that hold stocks directly, and see how much of your money lands on the same stocks twice.

Unlock FundXLS Pro$45/quarter Pro · Cancel anytime

PARNX Mutual Fund All Holdings

PARNX holdings total 45 positions. The top 10 holdings account for 33.7% of the fund, led by Teradyne Inc at 3.9%, Datadog Inc. Class A at 3.8%, Snowflake Inc at 3.8%.

PARNX portfolio concentration is moderate, with the top 10 representing 33.7% of total assets. The largest sector exposure is Information Technology at 37.9%.

PARNX sectors provide a detailed breakdown. PARNX overlap shows how holdings compare to other funds in your portfolio.