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DELTEC ASSET MANAGEMENT LLC — 13F Holdings & Portfolio

CIK 1269950 · latest 13F-HR filed 2026-10-26

Backtest portfolio

DELTEC ASSET MANAGEMENT LLC manages $641.7M in 13F-reported U.S. long-equity assets across 255 reported positions as of its 2026-09-30 13F-HR filing. Its largest disclosed positions are GOOGL (8.77%), NVDA (5.49%), AMZN (5.49%). Quarter over quarter (versus its 2026-06-30 filing) the fund opened 41 new positions and exited 50; 27 existing positions rose in reported value and 83 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.

Loading holdings…
AUM
$641.7M

Long-equity book

Holdings
255

Distinct positions

Period
2026-09-30

Filed 2026-10-26

Q/Q Activity
+41 / −50 / ↑27 / ↓83

vs 2026-06-30

Portfolio charts

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

Portfolio map

Q3 26
GOOGL8.8% · -2%NVDA5.5% · -8%AMZN5.5% · -7%AVGO4.6% · +1%MSFT4.6% · -0%SGOV3.2% · newOCUL3.1% · +6%TSM2.8% · +2%DASH2.6% · -44%V2.5% · -2%FLEX2.4% · +40%CCL2.3% · +1%META1.8% · -24%UBER1.8% · +4%ALK1.7% · -6%LLY1.5% · -3%SPCX1.5% · newAAPL1.4% · -0%JBL1.4% · +206%PM1.2% · -0%WMT1.2% · -2%EQT1.2% · 0%TTMI1.1% · newHD1.0% · -4%MA1.0% · -5%MRVL0.9% · 0%EMBJ0.9% · -2%GOOG0.8% · -0%SHEL0.8% · 0%VIST0.8% · -5%CLS0.7% · -5%SPY0.7% · -8%BIL0.6% · newCPA0.6% · +10%BRK.B0.6% · 0%XLV0.6% · -3%PH0.5% · 0%TJX0.5% · 0%MELI0.5% · 0%JPM0.5% · 0%COST0.5% · -7%CSCO0.5% · -2%GFS0.5% · newCOF0.5% · -77%MNKD0.4% · +16%MO0.4% · 0%AR0.4% · -11%GEV0.4% · 0%TBBB0.4% · -18%C0.4% · 0%ORCL0.3% · +15%CIEN0.3% · newXLI0.3% · 0%RSP0.3% · 0%KB0.3% · 0%DRAM0.3% · +96%PAM0.3% · +6%GS0.3% · 0%XLU0.3% · 0%QXO0.3% · 0%

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

Q2 26 → Q3 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 = 43.1%

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

Firm Profile & Key People

As of the firm’s regulatory filing dated Mar 18, 2026.

Assets Under Management
$782.8M
Discretionary
$782.8M
Employees
15
Accounts
161
Address
530 FIFTH AVENUE
17TH FLOOR
NEW YORK, NY 10036
Phone
(212) 546-6200
Website
Name Title / Status Ownership Type
BLUE TEE PARTNERS, LLC ControlOWNER
since Apr 2000
75% or moreDomestic Entity
BYRNES, ARTHUR, EVERETT ControlSENIOR MANAGING DIR.
since Apr 2000
Less than 5%Individual
GORDON, JOHN, ROUSMANIERE ControlSENIOR MANAGING DIR.
since Apr 2000
Less than 5%Individual
LESKO, GREGORY, JOHNMANAGING DIRECTOR
since Dec 2003
Less than 5%Individual
VITTI, DENISE GRACEMANAGING DIRECTOR; CHIEF COMPLIANCE OFFICER
since Apr 2000
Less than 5%Individual
WHITE, JAMES, TERRYMANAGING DIRECTOR
since Apr 2000
Less than 5%Individual
BYRNES, ARTHUR, EVERETT Control
Indirect owner via BLUE TEE PARTNERS, LLC
MEMBER
since Apr 2000
50–75%Individual
GORDON, JOHN, ROUSMANIERE Control
Indirect owner via BLUE TEE PARTNERS, LLC
MEMBER
since Apr 2000
50–75%Individual
Ownership & leadership changes · 8 filings with changes since Mar 16, 2012

From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.

Feb 14, 2023 filing
  • ChangedLESKO, GREGORY, JOHN · ownership 5–10% → Less than 5%
Mar 31, 2022 filing
  • ChangedBLUE TEE PARTNERS, LLC · title MANAGING MEMBER → OWNER
  • ChangedBYRNES, ARTHUR, EVERETT · ownership 75% or more → Less than 5%
  • ChangedGORDON, JOHN, ROUSMANIERE · ownership 75% or more → Less than 5%
Feb 17, 2022 filing
  • ChangedLESKO, GREGORY, JOHN · ownership Less than 5% → 5–10%
Feb 19, 2020 filing
  • No longer listedHALL, TIMOTHY STEPHEN · MANAGING DIRECTOR · Less than 5% · listed since Jan 2008
Feb 22, 2018 filing
  • No longer listedGRUNDER, LINEN, ANN · MANAGING DIRECTOR · Less than 5% · listed since Dec 2003
Feb 24, 2015 filing
  • No longer listedZUPPELLO, STEPHEN · SR. MANAGING DIR. · 75% or more · control person · listed since Apr 2000
  • No longer listedZUPPELLO, STEPHEN · MEMBER · 25–50% · indirect via BLUE TEE PARTNERS LLC · control person · listed since Apr 2000
  • ChangedBYRNES, ARTHUR, EVERETT · indirect via BLUE TEE PARTNERS, LLC: ownership 25–50% → 50–75%
  • ChangedGORDON, JOHN, ROUSMANIERE · indirect via BLUE TEE PARTNERS, LLC: ownership 25–50% → 50–75%
Feb 3, 2015 filing
  • ChangedVITTI, DENISE GRACE · title MANAGING DIRECTOR → MANAGING DIRECTOR; CHIEF COMPLIANCE OFFICER
  • ChangedZUPPELLO, STEPHEN · title SR. MANAGING DIR., CHIEF COMPLIANCE OFFICER → SR. MANAGING DIR.
Feb 15, 2013 filing
  • ChangedBYRNES, ARTHUR, EVERETT · ownership Less than 5% → 75% or more
  • ChangedGORDON, JOHN, ROUSMANIERE · ownership Less than 5% → 75% or more
  • ChangedVITTI, DENISE GRACE · title CONTROLLER, FINOP → MANAGING DIRECTOR; no longer a control person
  • ChangedZUPPELLO, STEPHEN · title SR. MANAGING DIR., ROP, CROP, SCROP, CHIEF COMPLIANCE OFFICER, AML COMPLIANCE OFFICER → SR. MANAGING DIR., CHIEF COMPLIANCE OFFICER; ownership Less than 5% → 75% or more
Mar 16, 2012 filing (earliest on record)
  • ListedBLUE TEE PARTNERS, LLC · MANAGING MEMBER · 75% or more · control person
  • ListedBYRNES, ARTHUR, EVERETT · SENIOR MANAGING DIR. · Less than 5% · control person
  • ListedBYRNES, ARTHUR, EVERETT · MEMBER · 25–50% · indirect via BLUE TEE PARTNERS, LLC · control person
  • ListedGORDON, JOHN, ROUSMANIERE · SENIOR MANAGING DIR. · Less than 5% · control person
  • ListedGORDON, JOHN, ROUSMANIERE · MEMBER · 25–50% · indirect via BLUE TEE PARTNERS, LLC · control person
  • ListedGRUNDER, LINEN, ANN · MANAGING DIRECTOR · Less than 5%
  • ListedHALL, TIMOTHY STEPHEN · MANAGING DIRECTOR · Less than 5%
  • ListedLESKO, GREGORY, JOHN · MANAGING DIRECTOR · Less than 5%
  • ListedVITTI, DENISE GRACE · CONTROLLER, FINOP · Less than 5% · control person
  • ListedWHITE, JAMES, TERRY · MANAGING DIRECTOR · Less than 5%
  • ListedZUPPELLO, STEPHEN · SR. MANAGING DIR., ROP, CROP, SCROP, CHIEF COMPLIANCE OFFICER, AML COMPLIANCE OFFICER · Less than 5% · control person
  • ListedZUPPELLO, STEPHEN · MEMBER · 25–50% · indirect via BLUE TEE PARTNERS LLC · control person

Quarter-over-quarter changes

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

DELTEC ASSET MANAGEMENT LLC Holdings (2026-09-30)

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 ALPHABET INC GOOGL 02079K305 $56.3M 8.77% 163,499 SH
2 NVIDIA CORPORATION NVDA 67066G104 $35.3M 5.49% 154,383 SH
3 AMAZON COM INC AMZN 023135106 $35.2M 5.49% 141,312 SH
4 BROADCOM INC AVGO 11135F101 $29.5M 4.60% 84,124 SH
5 MICROSOFT CORP MSFT 594918104 $29.4M 4.57% 57,224 SH
6 ISHARES TR SGOV 46436E718 $20.2M 3.15% 200,849 SH
7 OCULAR THERAPEUTIX INC OCUL 67576A100 $20.1M 3.14% 2,623,597 SH
8 TAIWAN SEMICONDUCTOR MANUFAC TSM 874039100 $17.7M 2.76% 38,888 SH
9 DOORDASH INC DASH 25809K105 $17.0M 2.64% 92,362 SH
10 VISA INC V 92826C839 $15.9M 2.49% 44,382 SH
11 FLEX LTD FLEX Y2573F102 $15.3M 2.39% 139,284 SH
12 CARNIVAL CORP LTD CCL G2004J103 $15.0M 2.34% 612,337 SH
13 META PLATFORMS INC META 30303M102 $11.7M 1.82% 16,139 SH
14 UBER TECHNOLOGIES INC UBER 90353T100 $11.3M 1.76% 165,308 SH
15 ALASKA AIR GROUP INC ALK 011659109 $10.8M 1.68% 279,360 SH
16 ELI LILLY & CO LLY 532457108 $9.9M 1.54% 8,550 SH
17 SPACE EXPLORATION TECHN CORP SPCX 84615Q103 $9.4M 1.47% 62,487 SH
18 APPLE INC AAPL 037833100 $8.7M 1.36% 26,237 SH
19 JABIL INC JBL 466313103 $8.7M 1.36% 30,334 SH
20 PHILIP MORRIS INTL INC PM 718172109 $8.0M 1.25% 41,938 SH
21 WALMART INC WMT 931142103 $7.6M 1.18% 73,152 SH
22 EQT CORP EQT 26884L109 $7.4M 1.15% 152,139 SH
23 TTM TECHNOLOGIES INC TTMI 87305R109 $7.1M 1.10% 57,570 SH
24 HOME DEPOT INC HD 437076102 $6.5M 1.01% 22,864 SH
25 MASTERCARD INCORPORATED MA 57636Q104 $6.5M 1.01% 11,703 SH
26 MARVELL TECHNOLOGY INC MRVL 573874104 $6.1M 0.95% 23,015 SH
27 EMBRAER S.A. EMBJ 29082A107 $5.9M 0.91% 77,750 SH
28 ALPHABET INC GOOG 02079K107 $5.4M 0.85% 15,991 SH
29 SHELL PLC SHEL 780259305 $5.4M 0.84% 56,471 SH
30 VISTA ENERGY S.A.B. DE C.V. VIST 92837L109 $4.9M 0.76% 74,920 SH
31 CELESTICA INC CLS 15101Q207 $4.5M 0.69% 12,318 SH
32 STATE STR SPDR S&P 500 ETF T SPY 78462F103 $4.4M 0.68% 5,715 SH
33 SPDR SERIES TRUST BIL 78468R663 $4.1M 0.64% 45,000 SH
34 COPA HOLDINGS SA CPA P31076105 $3.9M 0.62% 29,937 SH
35 BERKSHIRE HATHAWAY INC DEL BRK.B 084670702 $3.9M 0.61% 7,813 SH
36 SELECT SECTOR SPDR TR XLV 81369Y209 $3.7M 0.58% 22,240 SH
37 PARKER-HANNIFIN CORP PH 701094104 $3.5M 0.54% 3,627 SH
38 TJX COS INC NEW TJX 872540109 $3.5M 0.54% 26,100 SH
39 MERCADOLIBRE INC MELI 58733R102 $3.4M 0.53% 1,965 SH
40 JPMORGAN CHASE & CO JPM 46625H100 $3.0M 0.46% 8,925 SH
41 COSTCO WHOLESALE CORPORATION COST 22160K105 $2.9M 0.46% 3,235 SH
42 CISCO SYS INC CSCO 17275R102 $2.9M 0.46% 27,246 SH
43 GLOBALFOUNDRIES INC GFS G39387108 $2.9M 0.45% 60,500 SH
44 CAPITAL ONE FINL CORP COF 14040H105 $2.9M 0.45% 15,000 SH
45 MANNKIND CORP MNKD 56400P706 $2.8M 0.44% 728,000 SH
46 ALTRIA GROUP INC MO 02209S103 $2.8M 0.44% 41,632 SH
47 ANTERO RESOURCES CORP AR 03674X106 $2.7M 0.42% 80,000 SH
48 GE VERNOVA INC GEV 36828A101 $2.4M 0.38% 2,550 SH
49 BBB FOODS INC TBBB G0896C103 $2.3M 0.37% 44,500 SH
50 CITIGROUP INC C 172967424 $2.3M 0.36% 17,600 SH
Filing History
Period Filed AUM Holdings Accession
2026-09-30 2026-10-26 $641.7M 255 0000919574-26-007190
2026-06-30 2026-07-21 $677.0M 264 0000919574-26-004484
2026-03-31 2026-04-24 $545.4M 235 0000919574-26-002400
2025-12-31 2026-01-29 $603.5M 218 0000919574-26-000517
Filer Information
Address
530 FIFTH AVENUE
17TH FLOOR
NEW YORK, NY 10036
Phone
(212) 546-6200
Filing Manager
DELTEC ASSET MANAGEMENT LLC
New York, NY
Signatory
Denise Vitti
Managing Director