Barton Investment Management Long-Term Concentrated

Name: Barton Investment Management Q3 2026 13F Filing | 13F Explorer
Creator: Barton Investment Management
Published: 2026-10-27

Location: West Conshohocken, PA

CIK: 0001387818 · Show all filings

Period: Q3 2026 (← Previous)

Filing Date: Oct 27, 2026

Total Value: $807M (100.0% shares, 0.0% debt)

Holdings (58)

New Positions (2)

SCHO SCHWAB STRATEGIC TR 0.2%

Value $1.489M Shares 62,420 Share Price $23.86 Est. Cost/Share $24.03 Unrealized @ Report Date -0.7%

XOM EXXONMOBIL HOLDINGS CORP 0.2%

Value $1.319M Shares 8,105 Share Price $162.75 Est. Cost/Share $162.75 Unrealized @ Report Date —

Ticker	Issuer	Shares	Value	%	Share Price	Est. Cost/Share	Unrealized @ Report Date	Class	CUSIP
SCHO	SCHWAB STRATEGIC TR	62,420	$1.489M	0.2%	$23.86	$24.03	-0.7%	SHT TM US TRES	808524862
XOM	EXXONMOBIL HOLDINGS CORP	8,105	$1.319M	0.2%	$162.75	$162.75	—	COM SHS	30233Q108

Increased Positions (8)

GTLB GITLAB INC 3.4%

Value $27.11M (+84.8%) Shares 573,679 (+19.4%) Share Price $47.25 Est. Cost/Share $51.43 Unrealized @ Report Date -8.1%

MSFT MICROSOFT CORP 1.6%

Value $12.72M (+39.6%) Shares 24,796 (+1.6%) Share Price $512.90 Est. Cost/Share $33.84 Unrealized @ Report Date +1415.9%

RPRX ROYALTY PHARMA PLC 0.6%

Value $5.079M (+201.5%) Shares 87,029 (+189.7%) Share Price $58.36 Est. Cost/Share $54.81 Unrealized @ Report Date +6.5%

KVYO KLAVIYO INC 2.6%

Value $21.24M (+12.0%) Shares 1,350,490 (+7.5%) Share Price $15.73 Est. Cost/Share $24.93 Unrealized @ Report Date -36.9%

SYM SYMBOTIC INC 0.5%

Value $3.943M (+64.1%) Shares 93,734 (+75.3%) Share Price $42.07 Est. Cost/Share $47.46 Unrealized @ Report Date -11.4%

NVDA NVIDIA CORPORATION 0.1%

Value $900K (+16.4%) Shares 3,941 (+1.9%) Share Price $228.38 Est. Cost/Share $109.43 Unrealized @ Report Date +108.7%

VGSH VANGUARD SCOTTSDALE FDS 0.2%

Value $1.593M (+5.5%) Shares 27,669 (+6.7%) Share Price $57.56 Est. Cost/Share $58.35 Unrealized @ Report Date -1.4%

CSCO CISCO SYS INC 0.1%

Value $566K (-5.1%) Shares 5,260 (+3.5%) Share Price $107.63 Est. Cost/Share $60.89 Unrealized @ Report Date +76.8%

Ticker	Issuer	Shares	Value	%	Share Price	Est. Cost/Share	Unrealized @ Report Date	Class	CUSIP
GTLB	GITLAB INC	573,679 (+19.4%)	$27.11M (+84.8%)	3.4%	$47.25	$51.43	-8.1%	CLASS A COM	37637K108
MSFT	MICROSOFT CORP	24,796 (+1.6%)	$12.72M (+39.6%)	1.6%	$512.90	$33.84	+1415.9%	COM	594918104
RPRX	ROYALTY PHARMA PLC	87,029 (+189.7%)	$5.079M (+201.5%)	0.6%	$58.36	$54.81	+6.5%	SHS CLASS A	G7709Q104
KVYO	KLAVIYO INC	1,350,490 (+7.5%)	$21.24M (+12.0%)	2.6%	$15.73	$24.93	-36.9%	COM SER A	49845K101
SYM	SYMBOTIC INC	93,734 (+75.3%)	$3.943M (+64.1%)	0.5%	$42.07	$47.46	-11.4%	CLASS A COM	87151X101
NVDA	NVIDIA CORPORATION	3,941 (+1.9%)	$900K (+16.4%)	0.1%	$228.38	$109.43	+108.7%	COM	67066G104
VGSH	VANGUARD SCOTTSDALE FDS	27,669 (+6.7%)	$1.593M (+5.5%)	0.2%	$57.56	$58.35	-1.4%	SHORT TERM TREAS	92206C102
CSCO	CISCO SYS INC	5,260 (+3.5%)	$566K (-5.1%)	0.1%	$107.63	$60.89	+76.8%	COM	17275R102

Exited Positions (4)

EA ELECTRONIC ARTS INC 1.1%

Value $8.959M Shares 43,695 Share Price $205.04 * Est. Cost/Share $37.83 Unrealized @ Report Date +454.3%

XOM EXXON MOBIL CORP 0.1%

Value $1.108M Shares 8,105 Share Price $136.72 * Est. Cost/Share $54.77 Unrealized @ Report Date +197.2%

DASH DOORDASH INC 0.1%

Value $1.107M Shares 6,000 Share Price $184.53 Est. Cost/Share $81.41 Unrealized @ Report Date +125.5%

GLW CORNING INC 0.0%

Value $241K Shares 945 Share Price $255.43 * Est. Cost/Share $181.94 Unrealized @ Report Date -15.5%

Ticker	Issuer	Shares	Value	%	Share Price	Est. Cost/Share	Unrealized @ Report Date	Class	CUSIP
EA	ELECTRONIC ARTS INC	43,695	$8.959M	1.1%	$205.04 *	$37.83	+454.3%	—	285512109
XOM	EXXON MOBIL CORP	8,105	$1.108M	0.1%	$136.72 *	$54.77	+197.2%	—	30231G102
DASH	DOORDASH INC	6,000	$1.107M	0.1%	$184.53	$81.41	+125.5%	—	25809K105
GLW	CORNING INC	945	$241K	0.0%	$255.43 *	$181.94	-15.5%	—	219350105

Decreased Positions (20)

SHOP SHOPIFY INC 27.6%

Value $223M (+23.4%) Shares 1,501,272 (-5.0%) Share Price $148.30 Est. Cost/Share $38.98 Unrealized @ Report Date +280.5%

OKTA OKTA INC 5.3%

Value $43.07M (+47.3%) Shares 205,957 (-3.9%) Share Price $209.11 Est. Cost/Share $121.63 Unrealized @ Report Date +71.9%

NFLX NETFLIX INC. 19.5%

Value $157M (-3.7%) Shares 2,257,376 (-1.2%) Share Price $69.58 Est. Cost/Share $97.83 Unrealized @ Report Date -28.9%

AMZN AMAZON COM INC 14.7%

Value $118M (+1.9%) Shares 474,759 (-2.5%) Share Price $249.15 Est. Cost/Share $120.83 Unrealized @ Report Date +106.2%

GLBE GLOBAL E ONLINE LTD 5.0%

Value $39.95M (+5.6%) Shares 1,005,523 (-7.7%) Share Price $39.73 Est. Cost/Share $30.85 Unrealized @ Report Date +28.8%

EQIX EQUINIX INC 3.9%

Value $31.38M (-5.6%) Shares 31,019 (-2.8%) Share Price $1011.57 Est. Cost/Share $218.62 Unrealized @ Report Date —

GFL GFL ENVIRONMENTAL INC 2.1%

Value $17.07M (+11.7%) Shares 408,082 (-1.8%) Share Price $41.83 Est. Cost/Share $33.62 Unrealized @ Report Date +24.4%

BL BLACKLINE INC 0.3%

Value $2.048M (-42.1%) Shares 77,185 (-38.7%) Share Price $26.53 Est. Cost/Share $40.26 Unrealized @ Report Date -34.1%

AAPL APPLE INC 1.0%

Value $8.17M (+13.6%) Shares 24,532 (-1.3%) Share Price $333.02 Est. Cost/Share $107.85 Unrealized @ Report Date +208.8%

AMT AMERICAN TOWER CORP 1.5%

Value $12.26M (-2.7%) Shares 74,912 (-2.8%) Share Price $163.69 Est. Cost/Share $62.28 Unrealized @ Report Date —

PYPL PAYPAL HLDGS INC 0.6%

Value $4.501M (+5.2%) Shares 85,692 (-13.5%) Share Price $52.53 Est. Cost/Share $39.84 Unrealized @ Report Date +31.8%

TROW PRICE T ROWE GROUP INC 0.2%

Value $1.419M (-11.1%) Shares 13,640 (-2.8%) Share Price $104.05 Est. Cost/Share $48.19 Unrealized @ Report Date +115.9%

VTI VANGUARD INDEX FDS 0.5%

Value $3.778M (-3.8%) Shares 10,095 (-4.9%) Share Price $374.24 Est. Cost/Share $137.98 Unrealized @ Report Date +171.2%

INTC INTEL CORP 0.1%

Value $407K (-24.7%) Shares 3,385 (-12.5%) Share Price $120.23 Est. Cost/Share $101.12 Unrealized @ Report Date +18.9%

JNJ JOHNSON & JOHNSON 0.5%

Value $3.7M (+2.9%) Shares 13,976 (-1.3%) Share Price $264.74 Est. Cost/Share $60.81 Unrealized @ Report Date +335.4%

SPY STATE STR SPDR S&P 500 ETF T 0.1%

Value $556K (-11.3%) Shares 729 (-13.1%) Share Price $762.63 Est. Cost/Share $384.35 Unrealized @ Report Date +98.4%

TBLL INVESCO EXCH TRADED FD TR II 0.2%

Value $2.001M (-2.7%) Shares 18,959 (-2.7%) Share Price $105.56 Est. Cost/Share $105.65 Unrealized @ Report Date -0.1%

NTRS NORTHERN TR CORP 0.0%

Value $339K (-13.4%) Shares 2,001 (-11.1%) Share Price $169.36 Est. Cost/Share $84.00 Unrealized @ Report Date +101.6%

AMD ADVANCED MICRO DEVICES INC 0.0%

Value $346K (-10.5%) Shares 565 (-15.0%) Share Price $611.76 Est. Cost/Share $409.99 Unrealized @ Report Date +49.2%

BILL BILL HOLDINGS INC 0.0%

Value $318K (-5.5%) Shares 7,482 (-19.7%) Share Price $42.54 Est. Cost/Share $89.43 Unrealized @ Report Date -52.4%

Ticker	Issuer	Shares	Value	%	Share Price	Est. Cost/Share	Unrealized @ Report Date	Class	CUSIP
SHOP	SHOPIFY INC	1,501,272 (-5.0%)	$223M (+23.4%)	27.6%	$148.30	$38.98	+280.5%	CL A SUB VTG SHS	82509L107
OKTA	OKTA INC	205,957 (-3.9%)	$43.07M (+47.3%)	5.3%	$209.11	$121.63	+71.9%	CL A	679295105
NFLX	NETFLIX INC.	2,257,376 (-1.2%)	$157M (-3.7%)	19.5%	$69.58	$97.83	-28.9%	COM	64110L106
AMZN	AMAZON COM INC	474,759 (-2.5%)	$118M (+1.9%)	14.7%	$249.15	$120.83	+106.2%	COM	023135106
GLBE	GLOBAL E ONLINE LTD	1,005,523 (-7.7%)	$39.95M (+5.6%)	5.0%	$39.73	$30.85	+28.8%	SHS	M5216V106
EQIX	EQUINIX INC	31,019 (-2.8%)	$31.38M (-5.6%)	3.9%	$1011.57	$218.62	—	COM	29444U700
GFL	GFL ENVIRONMENTAL INC	408,082 (-1.8%)	$17.07M (+11.7%)	2.1%	$41.83	$33.62	+24.4%	SUB VTG SHS	36168Q104
BL	BLACKLINE INC	77,185 (-38.7%)	$2.048M (-42.1%)	0.3%	$26.53	$40.26	-34.1%	COM	09239B109
AAPL	APPLE INC	24,532 (-1.3%)	$8.17M (+13.6%)	1.0%	$333.02	$107.85	+208.8%	COM	037833100
AMT	AMERICAN TOWER CORP	74,912 (-2.8%)	$12.26M (-2.7%)	1.5%	$163.69	$62.28	—	COM	03027X100
PYPL	PAYPAL HLDGS INC	85,692 (-13.5%)	$4.501M (+5.2%)	0.6%	$52.53	$39.84	+31.8%	COM	70450Y103
TROW	PRICE T ROWE GROUP INC	13,640 (-2.8%)	$1.419M (-11.1%)	0.2%	$104.05	$48.19	+115.9%	COM	74144T108
VTI	VANGUARD INDEX FDS	10,095 (-4.9%)	$3.778M (-3.8%)	0.5%	$374.24	$137.98	+171.2%	MRNGSTR TTL STK	922908769
INTC	INTEL CORP	3,385 (-12.5%)	$407K (-24.7%)	0.1%	$120.23	$101.12	+18.9%	COM	458140100
JNJ	JOHNSON & JOHNSON	13,976 (-1.3%)	$3.7M (+2.9%)	0.5%	$264.74	$60.81	+335.4%	COM	478160104
SPY	STATE STR SPDR S&P 500 ETF T	729 (-13.1%)	$556K (-11.3%)	0.1%	$762.63	$384.35	+98.4%	TR UNIT	78462F103
TBLL	INVESCO EXCH TRADED FD TR II	18,959 (-2.7%)	$2.001M (-2.7%)	0.2%	$105.56	$105.65	-0.1%	SHORT TERM ETF	46138G888
NTRS	NORTHERN TR CORP	2,001 (-11.1%)	$339K (-13.4%)	0.0%	$169.36	$84.00	+101.6%	COM	665859104
AMD	ADVANCED MICRO DEVICES INC	565 (-15.0%)	$346K (-10.5%)	0.0%	$611.76	$409.99	+49.2%	COM	007903107
BILL	BILL HOLDINGS INC	7,482 (-19.7%)	$318K (-5.5%)	0.0%	$42.54	$89.43	-52.4%	COM	090043100

Unchanged Positions (28)

OWL BLUE OWL CAPITAL INC 2.4%

Value $19.18M Shares 2,109,550 Share Price $9.09 Est. Cost/Share $12.38 Unrealized @ Report Date -26.5%

GOOGL ALPHABET INC 0.8%

Value $6.591M Shares 19,155 Share Price $344.08 Est. Cost/Share $107.83 Unrealized @ Report Date +219.1%

VRT VERTIV HOLDINGS CO 0.1%

Value $478K Shares 1,980 Share Price $241.31 Est. Cost/Share $97.15 Unrealized @ Report Date +148.4%

QXO QXO INC 0.0%

Value $323K Shares 27,670 Share Price $11.69 Est. Cost/Share $22.08 Unrealized @ Report Date -47.1%

MRK MERCK & CO INC 0.1%

Value $1.185M Shares 8,158 Share Price $145.31 Est. Cost/Share $33.83 Unrealized @ Report Date +329.6%

GOOG ALPHABET INC 0.4%

Value $3.624M Shares 10,635 Share Price $340.74 Est. Cost/Share $107.65 Unrealized @ Report Date +216.5%

TWLO TWILIO INC 0.0%

Value $385K Shares 1,315 Share Price $292.46 Est. Cost/Share $177.28 Unrealized @ Report Date +65.0%

ADBE ADOBE INC 0.1%

Value $768K Shares 3,200 Share Price $239.94 Est. Cost/Share $64.14 Unrealized @ Report Date +274.1%

META META PLATFORMS INC 0.1%

Value $456K Shares 629 Share Price $725.18 Est. Cost/Share $252.64 Unrealized @ Report Date +187.0%

DELL DELL TECHNOLOGIES INC 0.1%

Value $471K Shares 875 Share Price $537.95 Est. Cost/Share $289.23 Unrealized @ Report Date +86.0%

ABBV ABBVIE INC 0.2%

Value $1.982M Shares 7,578 Share Price $261.59 Est. Cost/Share $31.40 Unrealized @ Report Date +733.2%

ABT ABBOTT LABORATORIES 0.1%

Value $777K Shares 7,858 Share Price $98.83 Est. Cost/Share $38.98 Unrealized @ Report Date +153.5%

ORCL ORACLE CORP 0.1%

Value $794K Shares 5,785 Share Price $137.30 Est. Cost/Share $27.58 Unrealized @ Report Date +397.7%

AXP AMERICAN EXPRESS CO 0.1%

Value $444K Shares 1,460 Share Price $304.10 Est. Cost/Share $60.98 Unrealized @ Report Date +398.7%

ADP AUTOMATIC DATA PROCESSING IN 0.0%

Value $361K Shares 1,400 Share Price $258.06 Est. Cost/Share $147.45 Unrealized @ Report Date +75.0%

DIS DISNEY WALT CO 0.1%

Value $555K Shares 5,289 Share Price $104.90 Est. Cost/Share $60.46 Unrealized @ Report Date +73.5%

QCOM QUALCOMM INC 0.9%

Value $6.99M Shares 37,980 Share Price $184.04 Est. Cost/Share $49.73 Unrealized @ Report Date +270.0%

PFE PFIZER INC 0.0%

Value $271K Shares 9,495 Share Price $28.52 Est. Cost/Share $18.14 Unrealized @ Report Date +57.2%

ASML ASML HLDG NV 0.0%

Value $272K Shares 150 Share Price $1811.67 Est. Cost/Share $1591.72 Unrealized @ Report Date +13.8%

COST COSTCO WHOLESALE CORPORATION 0.1%

Value $932K Shares 1,024 Share Price $910.34 Est. Cost/Share $385.04 Unrealized @ Report Date +136.4%

AVGO BROADCOM INC 0.0%

Value $339K Shares 965 Share Price $351.23 Est. Cost/Share $215.92 Unrealized @ Report Date +62.6%

— BERKSHIRE HATHAWAY CL B 0.6%

Value $5.106M Shares 10,255 Share Price $497.95 Est. Cost/Share $271.90 Unrealized @ Report Date —

WMT WALMART INC 0.0%

Value $263K Shares 2,535 Share Price $103.92 Est. Cost/Share $72.48 Unrealized @ Report Date +43.4%

SMH VANECK ETF TRUST 0.0%

Value $250K Shares 410 Share Price $609.00 Est. Cost/Share $545.62 Unrealized @ Report Date +11.6%

BRK/A BERKSHIRE HATHAWAY INC DEL 0.9%

Value $7.47M Shares 10 Share Price $747005.00 Est. Cost/Share $330761.80 Unrealized @ Report Date +125.8%

SCHX SCHWAB STRATEGIC TR 0.1%

Value $507K Shares 16,890 Share Price $30.00 Est. Cost/Share $25.39 Unrealized @ Report Date +18.1%

VTV VANGUARD INDEX FDS 0.0%

Value $267K Shares 1,235 Share Price $216.08 Est. Cost/Share $167.43 Unrealized @ Report Date +29.1%

ADI ANALOG DEVICES INC 0.0%

Value $292K Shares 735 Share Price $396.71 Est. Cost/Share $318.18 Unrealized @ Report Date +24.7%

Ticker	Issuer	Shares	Value	%	Share Price	Est. Cost/Share	Unrealized @ Report Date	Class	CUSIP
OWL	BLUE OWL CAPITAL INC	2,109,550	$19.18M	2.4%	$9.09	$12.38	-26.5%	COM CL A	09581B103
GOOGL	ALPHABET INC	19,155	$6.591M	0.8%	$344.08	$107.83	+219.1%	CAP STK CL A	02079K305
VRT	VERTIV HOLDINGS CO	1,980	$478K	0.1%	$241.31	$97.15	+148.4%	COM CL A	92537N108
QXO	QXO INC	27,670	$323K	0.0%	$11.69	$22.08	-47.1%	COM NEW	82846H405
MRK	MERCK & CO INC	8,158	$1.185M	0.1%	$145.31	$33.83	+329.6%	COM	58933Y105
GOOG	ALPHABET INC	10,635	$3.624M	0.4%	$340.74	$107.65	+216.5%	CAP STK CL C	02079K107
TWLO	TWILIO INC	1,315	$385K	0.0%	$292.46	$177.28	+65.0%	CL A	90138F102
ADBE	ADOBE INC	3,200	$768K	0.1%	$239.94	$64.14	+274.1%	COM	00724F101
META	META PLATFORMS INC	629	$456K	0.1%	$725.18	$252.64	+187.0%	CL A	30303M102
DELL	DELL TECHNOLOGIES INC	875	$471K	0.1%	$537.95	$289.23	+86.0%	CL C	24703L202
ABBV	ABBVIE INC	7,578	$1.982M	0.2%	$261.59	$31.40	+733.2%	COM	00287Y109
ABT	ABBOTT LABORATORIES	7,858	$777K	0.1%	$98.83	$38.98	+153.5%	COM	002824100
ORCL	ORACLE CORP	5,785	$794K	0.1%	$137.30	$27.58	+397.7%	COM	68389X105
AXP	AMERICAN EXPRESS CO	1,460	$444K	0.1%	$304.10	$60.98	+398.7%	COM	025816109
ADP	AUTOMATIC DATA PROCESSING IN	1,400	$361K	0.0%	$258.06	$147.45	+75.0%	COM	053015103
DIS	DISNEY WALT CO	5,289	$555K	0.1%	$104.90	$60.46	+73.5%	COM	254687106
QCOM	QUALCOMM INC	37,980	$6.99M	0.9%	$184.04	$49.73	+270.0%	COM	747525103
PFE	PFIZER INC	9,495	$271K	0.0%	$28.52	$18.14	+57.2%	COM	717081103
ASML	ASML HLDG NV	150	$272K	0.0%	$1811.67	$1591.72	+13.8%	N Y REGISTRY SHS	N07059210
COST	COSTCO WHOLESALE CORPORATION	1,024	$932K	0.1%	$910.34	$385.04	+136.4%	COM	22160K105
AVGO	BROADCOM INC	965	$339K	0.0%	$351.23	$215.92	+62.6%	COM	11135F101
—	BERKSHIRE HATHAWAY CL B	10,255	$5.106M	0.6%	$497.95	$271.90	—	CL B	084670207
WMT	WALMART INC	2,535	$263K	0.0%	$103.92	$72.48	+43.4%	COM	931142103
SMH	VANECK ETF TRUST	410	$250K	0.0%	$609.00	$545.62	+11.6%	SEMICONDUCTR ETF	92189F676
BRK/A	BERKSHIRE HATHAWAY INC DEL	10	$7.47M	0.9%	$747005.00	$330761.80	+125.8%	CL A	084670108
SCHX	SCHWAB STRATEGIC TR	16,890	$507K	0.1%	$30.00	$25.39	+18.1%	US LRG CAP ETF	808524201
VTV	VANGUARD INDEX FDS	1,235	$267K	0.0%	$216.08	$167.43	+29.1%	MRNGSTR VAL ETF	922908744
ADI	ANALOG DEVICES INC	735	$292K	0.0%	$396.71	$318.18	+24.7%	COM	032654105