Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$113M |
| 2 |
SPDR Gold Trust
GLD
|
+$68.6M |
| 3 |
NVIDIA
NVDA
|
+$63.4M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$55.2M |
| 5 |
Apple
AAPL
|
+$54.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Netflix
NFLX
|
+$27.1M |
| 2 |
Qualcomm
QCOM
|
+$24.6M |
| 3 |
Walt Disney
DIS
|
+$21.2M |
| 4 |
Advanced Micro Devices
AMD
|
+$18.2M |
| 5 |
Snowflake
SNOW
|
+$16.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.44% |
| 2 | Consumer Discretionary | 0.32% |
| 3 | Healthcare | 0.22% |
| 4 | Financials | 0.17% |
| 5 | Communication Services | 0.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
901
Starbucks
SBUX
$118B
| $10.5M | 0.01% |
115,265
+69,751
| +153% | +$6.85M |
|
902
PUT
Polaris
PII
$4.13B
| $10.5M | 0.01% |
100,900
+84,800
| +527% | +$10.1M |
|
903
CALL
ChargePoint
CHPT
$140M
| $10.5M | 0.01% |
105,575
-540
| -0.5% | -$78.3K |
|
904
General Mills
GIS
$19B
| $10.5M | 0.01% |
163,657
+123,024
| +303% | +$8.69M |
|
|
PXD
905
PUT
DELISTED
Pioneer Natural Resource Co.
PXD
| $10.5M | 0.01% |
45,600
-70,700
| -61% | -$16.1M |
|
906
Kenvue
KVUE
$36.3B
| $10.4M | 0.01% |
519,594
+470,944
| +968% | +$10.9M |
|
907
PUT
BJs Wholesale Club
BJ
$11.7B
| $10.4M | 0.01% |
145,400
+12,500
| +9% | +$841K |
|
908
PUT
Progressive
PGR
$120B
| $10.4M | 0.01% |
74,500
-9,900
| -12% | -$1.3M |
|
909
Target
TGT
$61.1B
| $10.4M | 0.01% |
+93,774
| New | +$11.9M |
|
|
AXON
910
PUT
Axon Enterprise
AXON
$39.6B
| $10.3M | 0.01% |
52,000
+21,800
| +72% | +$4.29M |
|
|
WCC
911
PUT
WESCO International
WCC
$16.1B
| $10.3M | 0.01% |
71,800
+31,200
| +77% | +$5.04M |
|
912
PUT
Illinois Tool Works
ITW
$79.7B
| $10.3M | 0.01% |
44,800
+9,300
| +26% | +$2.27M |
|
913
CALL
Cboe Global Markets
CBOE
$29.8B
| $10.2M | 0.01% |
65,600
+36,000
| +122% | +$5.3M |
|
914
PUT
British American Tobacco
BTI
$129B
| $10.2M | 0.01% |
326,200
-126,700
| -28% | -$4.18M |
|
915
CALL
Cheniere Energy
LNG
$57B
| $10.2M | 0.01% |
61,500
-1,500
| -2% | -$242K |
|
916
CALL
Keysight
KEYS
$55.6B
| $10.2M | 0.01% |
76,900
+45,000
| +141% | +$6.66M |
|
917
PUT
GoDaddy
GDDY
$11.6B
| $10.2M | 0.01% |
136,600
+8,600
| +7% | +$635K |
|
918
Scorpio Tankers
STNG
$3.95B
| $10.1M | 0.01% |
187,512
+175,988
| +1,527% | +$8.6M |
|
919
PUT
Old Dominion Freight Line
ODFL
$48B
| $10.1M | 0.01% |
49,600
+29,400
| +146% | +$5.95M |
|
920
Nutrien
NTR
$32.9B
| $10.1M | 0.01% |
164,277
+71,680
| +77% | +$4.53M |
|
921
CALL
Enbridge
ENB
$123B
| $10.1M | 0.01% |
305,200
+185,500
| +155% | +$6.58M |
|
922
PUT
PennyMac Financial
PFSI
$4.29B
| $10.1M | 0.01% |
151,900
+67,300
| +80% | +$4.84M |
|
923
CALL
ClearShares Piton Intermediate Fixed Income ETF
PIFI
$97.3M
| $10.1M | 0.01% |
591,800
+86,500
| +17% | +$7.86M |
|
924
CALL
EPAM Systems
EPAM
$4.5B
| $10.1M | 0.01% |
39,400
-800
| -2% | -$198K |
|
925
PUT
Intercontinental Exchange
ICE
$81B
| $10.1M | 0.01% |
118,100
+47,300
| +67% | +$5.42M |
|
Similar funds
Simplex Trading's Q3 2023 Portfolio in Review
As of Q3 2023, Simplex Trading held 10,417 positions worth $127B, up 4.5% from $122B the previous quarter. Its ten largest holdings account for 44% of the portfolio.
Simplex Trading deployed $11.9B of net new capital in Q3 2023, opening 1,399 new positions and adding to 3,690 existing holdings. Its largest new stake was Amazon: 841,102 shares worth $107M.
By sector, the portfolio is most concentrated in Technology at 0.44% of assets, up from 0.41% a quarter earlier, followed by Consumer Discretionary and Healthcare.
On the sell side, the largest reduction was Netflix, an estimated $27.1M trimmed.
- Simplex Trading's largest Q3 2023 buy was Amazon: 841,102 shares worth $107M.
- Simplex Trading added most to SPDR Gold Trust in Q3 2023, an estimated $68.6M increase.
- Simplex Trading's biggest Q3 2023 reduction was Netflix, cutting an estimated $27.1M.
- Simplex Trading fully exited Qualcomm in Q3 2023, selling an estimated $24.6M.
- Simplex Trading's ten largest holdings make up 44% of its $127B portfolio in Q3 2023.
- Simplex Trading opened 1,399 new positions and closed 1,719 in Q3 2023.
- Simplex Trading's portfolio value rose 4.5% quarter-over-quarter to $127B.
Based on Simplex Trading's 13F filing for Q3 2023, filed 1 Nov 2023.