Granahan Investment Management, LLC

WALTHAM, MA · CIK 1026710 · 13F filing filed 2026-08-14

SEC-registered investment adviser since 1985 · limited liability company

Assets managed$2.4bn
Staff20 · 8 in investment roles
Main clients (by assets)Private funds 36%, Mutual funds and ETFs 23%, State and local governments 13%
Websitegranahan.com
Form ADV · 2026-03-26SEC adviser record

Legal entityGRANAHAN INVESTMENT MANAGEMENT, LLC (US)

$2.8bn reported value +35.7% vs Q1 2026

150positions

34.0%in top 10

22 new 67 added 60 reduced 21 sold out vs Q1 2026

Holdings, Q2 2026

The small lines show how much was held over the last 4 quarters (adjusted for stock splits).

#	Security	Ticker	Shares	Value	% of portfolio	Change	Shares change
1	PORCH GROUP INC COM PRCH	PRCH	12,393,660	$186.4m6.64%	6.64%	Reduced -281.3k	-281,327 -2.2%
2	SILICON MOTION TECHNOLOGY CO SPONSORED ADR SIMO	SIMO	445,752	$148.6m5.29%	5.29%	Added +250.5k	+250,500 128.3%
3	FORGENT POWER SOLUTIONS INC COM SHS CL A FPS	FPS	1,807,608	$101.0m3.60%	3.60%	Reduced -263.5k	-263,476 -12.7%
4	INDIE SEMICONDUCTOR INC CLASS A COM INDI	INDI	19,419,892	$87.2m3.11%	3.11%	Reduced -863.9k	-863,947 -4.3%
5	VICTORY CAP HLDGS INC COM CL A VCTR	VCTR	1,015,343	$85.3m3.04%	3.04%	Reduced -72.0k	-71,972 -6.6%
6	FTAI AVIATION LTD SHS FTAI	FTAI	293,722	$79.5m2.83%	2.83%	Reduced -46.6k	-46,595 -13.7%
7	MAREX GROUP PLC ORD 96665EUR	96665EUR	1,254,283	$76.4m2.72%	2.72%	Added +30.5k	+30,533 2.5%
8	MODINE MFG CO COM MOD	MOD	263,572	$70.4m2.51%	2.51%	Reduced -114.0k	-114,014 -30.2%
9	CARPENTER TECHNOLOGY CORP COM CRS	CRS	96,981	$59.8m2.13%	2.13%	Reduced -142.5k	-142,488 -59.5%
10	NEXTRACKER INC CLASS A COM NXT	NXT	495,938	$59.1m2.11%	2.11%	Added +71.5k	+71,504 16.9%
11	MAGNITE INC COM MGNI	MGNI	3,083,211	$58.5m2.09%	2.09%	Added +529.8k	+529,798 20.8%
12	AXON ENTERPRISE INC COM AXON	AXON	96,829	$54.3m1.93%	1.93%	Added +6.1k	+6,137 6.8%
13	ONTO INNOVATION INC COM ONTO	ONTO	141,568	$53.6m1.91%	1.91%	Reduced -57.1k	-57,126 -28.8%
14	TTM TECHNOLOGIES INC COM TTMI	TTMI	269,330	$50.4m1.79%	1.79%	Reduced -58.1k	-58,104 -17.8%
15	LIGAND PHARMACEUTICALS INC COM NEW LGND	LGND	147,231	$46.5m1.66%	1.66%	Added +123.1k	+123,066 509.3%
16	KURA SUSHI USA INC CL A COM KRUS	KRUS	801,969	$46.2m1.64%	1.64%	Added +194.1k	+194,052 31.9%
17	REPLIGEN CORP COM RGEN	RGEN	332,271	$45.3m1.62%	1.62%	Added +245.3k	+245,318 282.1%
18	DIGITAL TURBINE INC COM NEW APPS	APPS	3,494,200	$45.1m1.61%	1.61%	Reduced -3.6m	-3,618,151 -50.9%
19	LIFE TIME GROUP HOLDINGS INC COMMON STOCK LTH	LTH	1,083,587	$44.3m1.58%	1.58%	Reduced -116.9k	-116,896 -9.7%
20	GENIUS SPORTS LIMITED SHARES CL A GENI	GENI	7,024,330	$42.6m1.52%	1.52%	Added +1.6m	+1,640,568 30.5%
21	CASELLA WASTE SYS INC CL A CWST	CWST	436,289	$42.3m1.51%	1.51%	Added +186.0k	+186,027 74.3%
22	QXO INC COM NEW QXO	QXO	2,327,662	$40.2m1.43%	1.43%	Added +818.1k	+818,116 54.2%
23	GENERAC HLDGS INC COM GNRC	GNRC	122,872	$36.0m1.28%	1.28%	Added +109.7k	+109,659 829.9%
24	ZETA GLOBAL HOLDINGS CORP CL A ZETA	ZETA	1,758,212	$34.6m1.23%	1.23%	Added +733.7k	+733,725 71.6%
25	KORNIT DIGITAL LTD SHS KRNT	KRNT	2,119,398	$34.4m1.23%	1.23%	Reduced -179.1k	-179,073 -7.8%
26	TWIST BIOSCIENCE CORP COM TWST	TWST	314,882	$32.4m1.15%	1.15%	New
27	DAVE INC CLASS A COM NEW DAVE	DAVE	84,897	$31.6m1.13%	1.13%	Added +19.4k	+19,435 29.7%
28	SI-BONE INC COM SIBN	SIBN	1,931,182	$31.5m1.12%	1.12%	Added +192.1k	+192,085 11.1%
29	JFROG LTD ORD SHS FROG	FROG	299,683	$27.2m0.97%	0.97%	Added +169.6k	+169,580 130.3%
30	FIGURE TECHNOLOGY SOLUTIO COM CL A FIGR	FIGR	842,306	$25.9m0.92%	0.92%	Reduced -93.1k	-93,094 -9.9%
31	CELLEBRITE DI LTD ORDINARY SHARES CLBT	CLBT	1,661,163	$24.3m0.86%	0.86%	Reduced -78.5k	-78,481 -4.5%
32	GATES INDL CORP PLC ORD SHS 9666678D	9666678D	843,441	$23.6m0.84%	0.84%	Added +68.8k	+68,837 8.9%
33	GLOBAL E ONLINE LTD SHS GLBE	GLBE	633,327	$22.0m0.78%	0.78%	Added +86.4k	+86,358 15.8%
34	GRAIL INC COM GRAL	GRAL	321,176	$21.9m0.78%	0.78%	Added +271.5k	+271,548 547.2%
35	RBC BEARINGS INC COM RBC	RBC	34,017	$21.9m0.78%	0.78%	Reduced -4.5k	-4,476 -11.6%
36	CAVA GROUP INC COM CAVA	CAVA	265,411	$20.8m0.74%	0.74%	Reduced -38.5k	-38,480 -12.7%
37	ORTHOPEDIATRICS CORP COM KIDS	KIDS	1,085,964	$20.8m0.74%	0.74%	Added +189.2k	+189,223 21.1%
38	MATERION CORP COM MTRN	MTRN	69,793	$20.8m0.74%	0.74%	Reduced -74.7k	-74,683 -51.7%
39	DESCARTES SYS GROUP INC COM DSGX	DSGX	297,257	$20.6m0.73%	0.73%	Added +242.0k	+242,004 438.0%
40	QUANTINUUM INC CL A COM QNT	QNT	233,540	$19.1m0.68%	0.68%	New
41	TOAST INC CL A TOST	TOST	685,751	$19.1m0.68%	0.68%	Added +286.7k	+286,684 71.8%
42	TEXAS CAP BANCSHARES INC COM TCBI	TCBI	184,087	$19.0m0.68%	0.68%	Added +12.7k	+12,720 7.4%
43	SHARKNINJA INC COM SHS SN	SN	124,271	$18.9m0.67%	0.67%	Reduced -7.5k	-7,467 -5.7%
44	CELCUITY INC COM CELC	CELC	179,053	$18.7m0.67%	0.67%	Added +90.2k	+90,220 101.6%
45	UNUSUAL MACHS INC COM SHS UMAC	UMAC	829,328	$18.5m0.66%	0.66%	Reduced -187.1k	-187,126 -18.4%
46	FIRST WATCH RESTAURANT GROUP COM FWRG	FWRG	1,363,852	$17.6m0.63%	0.63%	Added +275.8k	+275,815 25.4%
47	NUTANIX INC CL A NTNX	NTNX	336,852	$17.2m0.61%	0.61%	Added +180.5k	+180,534 115.5%
48	NLIGHT INC COM LASR	LASR	236,991	$16.5m0.59%	0.59%	Added +51.7k	+51,720 27.9%
49	VEECO INSTRS INC DEL COM VECO	VECO	204,837	$15.5m0.55%	0.55%	Added +12.1k	+12,106 6.3%
50	STOKE THERAPEUTICS INC COM STOK	STOK	461,608	$15.1m0.54%	0.54%	Added +126.0k	+126,022 37.5%
51	BIOLIFE SOLUTIONS INC COM NEW BLFS	BLFS	521,430	$14.7m0.52%	0.52%	Reduced -200.6k	-200,627 -27.8%
52	AEROVIRONMENT INC COM AVAV	AVAV	86,783	$14.3m0.51%	0.51%	Added +46.0k	+46,047 113.0%
53	ARLO TECHNOLOGIES INC COM ARLO	ARLO	1,025,050	$13.8m0.49%	0.49%	Reduced -144.4k	-144,440 -12.3%
54	ALLEGRO MICROSYSTEMS INC COM ALGM	ALGM	185,461	$12.9m0.46%	0.46%	Reduced -29.5k	-29,540 -13.7%
55	MAYVILLE ENGR CO INC COM MEC	MEC	324,108	$12.1m0.43%	0.43%	Reduced -63.4k	-63,362 -16.4%
56	CHIME FINL INC COM SHS CL A CHYM	CHYM	583,381	$11.9m0.43%	0.43%	Added +137.2k	+137,229 30.8%
57	YORK SPACE SYSTEMS INC COM YSS	YSS	468,190	$11.5m0.41%	0.41%	Reduced -499.4k	-499,420 -51.6%
58	ALKAMI TECHNOLOGY INC COM ALKT	ALKT	627,781	$11.4m0.41%	0.41%	Added +374.9k	+374,913 148.3%
59	ARXIS INC CL A COM ARXS	ARXS	241,183	$11.1m0.40%	0.40%	New
60	DIGITALOCEAN HLDGS INC COM DOCN	DOCN	70,354	$11.0m0.39%	0.39%	Added +36.7k	+36,655 108.8%
61	RADNET INC COM RDNT	RDNT	171,637	$10.6m0.38%	0.38%	Added +67.4k	+67,355 64.6%
62	JOHN BEAN TECHNOLOGIES CORP COM JBTM	JBTM	72,356	$10.5m0.37%	0.37%	Added +9.1k	+9,144 14.5%
63	IRHYTHM TECHNOLOGIES INC COM IRTC	IRTC	83,903	$10.0m0.36%	0.36%	Reduced -12.1k	-12,119 -12.6%
64	AGILYSYS INC COM AGYS	AGYS	94,777	$9.9m0.35%	0.35%	Added +57.3k	+57,277 152.7%
65	SYNDAX PHARMACEUTICALS INC COM SNDX	SNDX	446,988	$9.8m0.35%	0.35%	Added +140.7k	+140,667 45.9%
66	KINIKSA PHARMACEUTICALS INTL ORD SHS CL A KNSA	KNSA	151,725	$9.7m0.35%	0.35%	Reduced -57.5k	-57,531 -27.5%
67	WILLSCOT HLDGS CORP COM CL A WSC	WSC	336,172	$9.7m0.35%	0.35%	Reduced -39.6k	-39,612 -10.5%
68	OKTA INC CL A OKTA	OKTA	68,271	$9.3m0.33%	0.33%	Added +27.4k	+27,428 67.2%
69	RHYTHM PHARMACEUTICALS INC COM RYTM	RYTM	83,270	$9.2m0.33%	0.33%	Added +5.6k	+5,561 7.2%
70	LIGHTPATH TECHNOLOGIES INC COM CL A LPTH	LPTH	563,045	$9.2m0.33%	0.33%	Reduced -190.6k	-190,576 -25.3%
71	OWLET INC CL A NEW OWLT	OWLT	1,595,419	$9.2m0.33%	0.33%	Added +408.8k	+408,764 34.5%
72	SCHOLAR ROCK HLDG CORP COM SRRK	SRRK	163,759	$9.0m0.32%	0.32%	Added +7.4k	+7,445 4.8%
73	CHEFS WHSE INC COM CHEF	CHEF	93,187	$9.0m0.32%	0.32%	Reduced -21.4k	-21,412 -18.7%
74	TAYSHA GENE THERAPIES INC COM SHS TSHA	TSHA	1,305,177	$8.9m0.32%	0.32%	Added +421.9k	+421,936 47.8%
75	LATTICE SEMICONDUCTOR CORP COM LSCC	LSCC	57,848	$8.8m0.32%	0.32%	Reduced -5.2k	-5,206 -8.3%
76	RAMBUS INC DEL COM RMBS	RMBS	66,245	$8.8m0.31%	0.31%	Reduced -214.0k	-214,001 -76.4%
77	HEALTHEQUITY INC COM HQY	HQY	97,318	$8.8m0.31%	0.31%	Reduced -24.8k	-24,781 -20.3%
78	ZYMEWORKS INC COM ZYME	ZYME	336,157	$8.8m0.31%	0.31%	Added +85.4k	+85,384 34.0%
79	CECO ENVIRONMENTAL CORP COM CECO	CECO	94,823	$8.6m0.31%	0.31%	Added +2.1k	+2,095 2.3%
80	ALIGNMENT HEALTHCARE INC COM ALHC	ALHC	354,973	$8.5m0.30%	0.30%	Reduced -425.5k	-425,527 -54.5%
81	MP MATERIALS CORP COM CL A MP	MP	148,652	$8.3m0.30%	0.30%	Added +10.0k	+9,994 7.2%
82	IMMUNOME INC COM IMNM	IMNM	378,542	$8.0m0.29%	0.29%	Added +71.5k	+71,521 23.3%
83	IMMUNOVANT INC COM IMVT	IMVT	206,372	$8.0m0.28%	0.28%	Reduced -38.1k	-38,058 -15.6%
84	EDGEWISE THERAPEUTICS INC COM EWTX	EWTX	193,778	$7.9m0.28%	0.28%	Reduced -7.1k	-7,065 -3.5%
85	XENON PHARMACEUTICALS INC COM XENE	XENE	129,443	$7.8m0.28%	0.28%	Added +25.0k	+24,965 23.9%
86	ARTERIS INC COM AIP	AIP	160,415	$7.8m0.28%	0.28%	Reduced -552.7k	-552,662 -77.5%
87	RIGETTI COMPUTING INC COMMON STOCK RGTI	RGTI	395,177	$7.6m0.27%	0.27%	Added +68.5k	+68,456 20.9%
88	DYNE THERAPEUTICS INC COM DYN	DYN	338,565	$7.5m0.27%	0.27%	New
89	ANTERIX INC COM ATEX	ATEX	72,121	$7.4m0.26%	0.26%	New
90	BRIDGEBIO PHARMA INC COM BBIO	BBIO	99,130	$7.4m0.26%	0.26%	Reduced -3.8k	-3,781 -3.7%
91	SPYRE THERAPEUTICS INC COM NEW SYRE	SYRE	82,991	$7.4m0.26%	0.26%	New
92	GUIDEWIRE SOFTWARE INC COM GWRE	GWRE	58,689	$7.2m0.26%	0.26%	New
93	KARMAN HLDGS INC COMMON STOCK KRMN	KRMN	144,544	$7.2m0.26%	0.26%	New
94	EVOLV TECHNOLOGIES HLDNGS IN COM CL A EVLV	EVLV	1,235,954	$7.2m0.26%	0.26%	New
95	IRADIMED CORP COM IRMD	IRMD	74,966	$7.2m0.26%	0.26%	Added +70.1k	+70,066 1429.9%
96	XERIS BIOPHARMA HOLDINGS INC COM XERS	XERS	898,753	$7.1m0.25%	0.25%	Reduced -23.1k	-23,101 -2.5%
97	BETA TECHNOLOGIES INC COM SHS CL A BETA	BETA	422,493	$7.1m0.25%	0.25%	Reduced -9.5k	-9,465 -2.2%
98	NETSKOPE INC CL A NTSK	NTSK	607,060	$6.6m0.24%	0.24%	Added +239.5k	+239,482 65.2%
99	CORVEL CORP COM CRVL	CRVL	105,569	$6.6m0.24%	0.24%	Added +25.7k	+25,673 32.1%
100	TOPGOLF CALLAWAY BRANDS CORP COM CALY	CALY	342,173	$6.4m0.23%	0.23%	Reduced -80.7k	-80,747 -19.1%

Sold out since Q1 2026

Security	Ticker	Shares held before	Value then
COMFORT SYS USA INC FIX	FIX	26,027	$35.9m26.0k shares
SEMTECH CORP SMTC	SMTC	370,642	$28.5m370.6k shares
SPORTRADAR GROUP AG SRAD	SRAD	1,439,659	$24.1m1.4m shares
STERLING INFRASTRUCTURE INC STRL	STRL	34,332	$14.0m34.3k shares
COMPASS INC COMP	COMP	1,885,312	$13.8m1.9m shares
STEPSTONE GROUP INC STEP	STEP	211,626	$10.1m211.6k shares
PHREESIA INC PHR	PHR	987,607	$8.3m987.6k shares
COSTAR GROUP INC CSGP	CSGP	161,047	$6.5m161.0k shares
ETHOS TECHNOLOGIES INC LIFE	LIFE	580,595	$6.5m580.6k shares
GENEDX HOLDINGS CORP WGS	WGS	96,605	$6.2m96.6k shares
FABRINET FN	FN	10,431	$5.4m10.4k shares
CREDO TECHNOLOGY GROUP HOLDI CRDO	CRDO	56,099	$5.3m56.1k shares
TOWER SEMICONDUCTOR LTD TSEM	TSEM	29,902	$5.2m29.9k shares
NUVALENT INC		43,003	$4.4m43.0k shares
IONQ INC IONQ	IONQ	146,012	$4.2m146.0k shares
REVOLUTION MEDICINES INC RVMD	RVMD	42,573	$4.1m42.6k shares
SOLENO THERAPEUTICS INC SLNO	SLNO	114,825	$3.8m114.8k shares
NEOGEN CORP NEOG	NEOG	250,026	$2.3m250.0k shares
RED CAT HLDGS INC RCAT	RCAT	109,603	$1.4m109.6k shares
AZENTA INC AZTA	AZTA	40,996	$866.2k41.0k shares
TECOGEN INC NEW TGEN	TGEN	88,496	$226.6k88.5k shares

Stakes above 5%

Companies where this manager has reported owning more than 5% of a class of shares, on Schedule 13D (may seek influence) or 13G (passive): its latest filing for each, from 19 Dec 2024 on.

Company	Ticker	Stake	Change	Schedule	Last filed
PORCH GROUP INC PRCH · 13G · filed 2025-12-05	PRCH	11.0%≈ $174.4m	+1.8 pts	13G	2025-12-05
INDIE SEMICONDUCTOR INC INDI · 13G · filed 2025-11-14	INDI	8.8%≈ $78.5m	-1.2 pts	13G	2025-11-14
KURA SUSHI USA INC KRUS · 13G · filed 2026-08-11	KRUS	7.2%≈ $46.2m	+1.1 pts	13G	2026-08-11
KORNIT DIGITAL LTD KRNT · 13G · filed 2026-02-17	KRNT	5.7%≈ $41.8m	new	13G	2026-02-17
OWLET INC OWLT · 13G · filed 2026-08-11	OWLT	5.5%≈ $9.2m	new	13G	2026-08-11