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Sienna Gestion — 13F Holdings & Portfolio

CIK 2021242 · latest 13F-HR filed 2026-08-13

Backtest portfolio

Sienna Gestion manages $1.71B in 13F-reported U.S. long-equity assets across 179 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are NVDA (7.19%), AAPL (5.97%), MSFT (4.70%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 65 new positions and exited 23; 45 existing positions rose in reported value and 54 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.

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AUM
$1.71B

Long-equity book

Holdings
179

Distinct positions

Period
2026-06-30

Filed 2026-08-13

Q/Q Activity
+65 / −23 / ↑45 / ↓54

vs 2026-03-31

Portfolio charts

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

Portfolio map

Q2 26
NVDA7.2% · -11%AAPL6.0% · -6%MSFT4.7% · -7%GOOGL4.1% · +630%AVGO2.5% · -7%MU2.3% · -10%TSLA1.8% · -8%AMAT1.7% · -29%JPM1.7% · -9%GOOG1.7% · newNBIS1.6% · +290%INTC1.6% · +335%LLY1.6% · -9%CSCO1.6% · -34%HD1.4% · -3%AMD1.3% · -16%MFC1.3% · -8%ATO1.2% · -7%JNJ1.2% · newLRCX1.2% · -5%BLK1.2% · -7%MA1.2% · -4%PG1.2% · -4%STT1.1% · -10%C1.1% · +47%TT1.0% · -4%AER1.0% · -38%WDC0.9% · -66%WAB0.9% · -12%WMT0.8% · newVZ0.8% · -27%CM0.8% · +4%GD0.8% · -20%TRV0.8% · -9%AMP0.8% · -11%ACN0.8% · +30%GEV0.8% · +16%TROW0.8% · -2%VLO0.7% · -15%COST0.7% · newBNY0.7% · newWSM0.7% · -8%AEM0.7% · -7%EME0.7% · -2%PLD0.7% · +3%ANET0.7% · -12%ED0.7% · +34%V0.7% · +535%BKNG0.7% · +2167%CAH0.7% · +4%FFIV0.6% · -39%UBER0.6% · -1%CCEP0.6% · newVEEV0.6% · -23%PSX0.6% · -19%MCD0.6% · -6%TMO0.6% · newEBAY0.6% · -30%HWM0.6% · +4%EW0.6% · +1%

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 = 33.7%

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

Firm Profile & Key People

Name Title / Status Ownership Type

Quarter-over-quarter changes

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

Sienna Gestion 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 NVIDIA CORP NVDA 67066G104 $122.7M 7.19% 622,392 SH
2 APPLE INC AAPL 037833100 $102.0M 5.97% 357,877 SH
3 MICROSOFT CORP MSFT 594918104 $80.2M 4.70% 215,275 SH
4 ALPHABET INC GOOGL 02079K305 $70.3M 4.12% 196,701 SH
5 BROADCOM INC AVGO 11135F101 $43.5M 2.55% 115,411 SH
6 MICRON TECHNOLOGY INC MU 595112103 $39.1M 2.29% 33,732 SH
7 TESLA INC TSLA 88160R101 $30.5M 1.79% 73,310 SH
8 APPLIED MATERIALS INC AMAT 038222105 $29.5M 1.73% 41,957 SH
9 JPMORGAN CHASE & CO JPM 46625H100 $28.8M 1.69% 86,434 SH
10 ALPHABET INC GOOG 02079K107 $28.2M 1.66% 79,527 SH
11 NEBIUS GROUP NV NBIS N97284108 $27.7M 1.62% 104,922 SH
12 ELI LILLY & CO LLY 532457108 $26.8M 1.57% 21,563 SH
13 CISCO SYSTEMS INC CSCO 17275R102 $26.5M 1.55% 222,868 SH
14 HOME DEPOT INC/THE HD 437076102 $24.5M 1.44% 69,193 SH
15 ADVANCED MICRO DEVICES INC AMD 007903107 $22.8M 1.34% 41,833 SH
16 MANULIFE FINANCIAL CORP MFC 56501R106 $22.7M 1.33% 552,839 SH
17 ATMOS ENERGY CORP ATO 049560105 $20.8M 1.22% 117,688 SH
18 JOHNSON & JOHNSON JNJ 478160104 $20.5M 1.20% 78,424 SH
19 LAM RESEARCH CORP LRCX 512807306 $20.4M 1.19% 49,012 SH
20 BLACKROCK INC BLK 00924D105 $20.3M 1.19% 21,173 SH
21 MASTERCARD INC MA 57636Q104 $20.1M 1.17% 38,910 SH
22 PROCTER & GAMBLE CO/THE PG 742718109 $19.9M 1.17% 132,617 SH
23 STATE STREET CORP STT 857477103 $19.1M 1.12% 111,011 SH
24 CITIGROUP INC C 172967424 $18.3M 1.07% 127,242 SH
25 TRANE TECHNOLOGIES PLC TT G8994E103 $17.6M 1.03% 36,319 SH
26 AERCAP HOLDINGS NV AER N00985106 $16.6M 0.97% 111,189 SH
27 INTEL CORP INTC 458140100 $16.4M 0.96% 122,879 SH
28 WESTERN DIGITAL CORP WDC 958102105 $15.3M 0.89% 23,164 SH
29 WABTEC CORP WAB 929740108 $15.1M 0.88% 55,581 SH
30 WALMART INC WMT 931142103 $14.1M 0.83% 121,903 SH
31 VERIZON COMMUNICATIONS INC VZ 92343V104 $14.0M 0.82% 313,745 SH
32 CANADIAN IMPERIAL BANK OF COMM CM 136069101 $13.9M 0.82% 121,221 SH
33 GENERAL DYNAMICS CORP GD 369550108 $13.6M 0.80% 38,612 SH
34 TRAVELERS COS INC/THE TRV 89417E109 $13.5M 0.79% 40,090 SH
35 AMERIPRISE FINANCIAL INC AMP 03076C106 $13.3M 0.78% 29,403 SH
36 ACCENTURE PLC ACN G1151C101 $13.1M 0.77% 104,137 SH
37 GE VERNOVA INC GEV 36828A101 $12.8M 0.75% 11,516 SH
38 T ROWE PRICE GROUP INC TROW 74144T108 $12.8M 0.75% 110,989 SH
39 VALERO ENERGY CORP VLO 91913Y100 $12.6M 0.74% 46,818 SH
40 COSTCO WHOLESALE CORP COST 22160K105 $12.3M 0.72% 12,872 SH
41 BANK NY MELLON CORP BNY 064058100 $12.1M 0.71% 83,074 SH
42 WILLIAMS-SONOMA INC WSM 969904101 $12.0M 0.71% 49,561 SH
43 AGNICO EAGLE MINES LTD AEM 008474108 $12.0M 0.70% 77,400 SH
44 EMCOR GROUP INC EME 29084Q100 $11.9M 0.70% 14,412 SH
45 PROLOGIS INC PLD 74340W103 $11.8M 0.69% 84,347 SH
46 ARISTA NETWORKS INC ANET 040413205 $11.8M 0.69% 71,011 SH
47 CONSOLIDATED EDISON INC ED 209115104 $11.7M 0.69% 103,283 SH
48 VISA INC V 92826C839 $11.7M 0.68% 33,812 SH
49 BOOKING HOLDINGS INC BKNG 09857L108 $11.4M 0.67% 61,956 SH
50 CARDINAL HEALTH INC CAH 14149Y108 $11.1M 0.65% 46,425 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-08-13 $1.71B 179 0000945621-26-001042
2026-03-31 2026-05-15 $1.53B 136 0000945621-26-000712
2025-12-31 2026-02-13 $1.68B 150 0000945621-26-000314
2025-09-30 2025-11-13 $1.43B 159 0000945621-25-001073
Filer Information
Address
21, BOULEVARD HAUSSMANN
PARIS, I0 75009
Phone
33 06 50 75 37 95
Filing Manager
Sienna Gestion
PARIS, I0
Signatory
Yoan Scialom
Head of Compliance