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 |
Walmart Inc
WMT
|
+$43.6M |
| 2 |
Apple
AAPL
|
+$40.9M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$37.7M |
| 4 |
Citigroup
C
|
+$34.2M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$32.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$189M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$123M |
| 3 |
NVIDIA
NVDA
|
+$115M |
| 4 |
Tesla
TSLA
|
+$52M |
| 5 |
Meta Platforms (Facebook)
META
|
+$49M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.42% |
| 2 | Consumer Discretionary | 0.2% |
| 3 | Healthcare | 0.17% |
| 4 | Industrials | 0.15% |
| 5 | Communication Services | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1026
PUT
Ares Capital
ARCC
$13.4B
| $7.8M | 0.01% |
427,100
+46,500
| +12% | +$879K |
|
1027
CALL
ZIM Integrated Shipping Services
ZIM
$3.08B
| $7.79M | 0.01% |
330,500
-138,100
| -29% | -$2.9M |
|
1028
CALL
Beyond Meat
BYND
$289M
| $7.79M | 0.01% |
480,100
-103,700
| -18% | -$1.71M |
|
|
CMA
1029
PUT
DELISTED
Comerica
CMA
| $7.78M | 0.01% |
179,200
+177,400
| +9,856% | +$11.4M |
|
1030
CALL
PG&E
PCG
$47B
| $7.73M | 0.01% |
478,300
-38,700
| -7% | -$611K |
|
1031
CALL
Labcorp
LH
$23.9B
| $7.73M | 0.01% |
39,227
+23,862
| +155% | +$4.91M |
|
1032
PUT
MP Materials
MP
$7.95B
| $7.73M | 0.01% |
274,100
+129,200
| +89% | +$3.91M |
|
1033
PUT
Canadian Pacific Kansas City
CP
$82B
| $7.69M | 0.01% |
100,000
+15,400
| +18% | +$1.19M |
|
1034
PUT
Kimberly-Clark
KMB
$35.6B
| $7.69M | 0.01% |
57,300
+10,200
| +22% | +$1.32M |
|
1035
Suncor Energy
SU
$78.4B
| $7.68M | 0.01% |
247,494
-20,867
| -8% | -$679K |
|
1036
TSMC
TSM
$2.16T
| $7.67M | 0.01% |
82,490
+82,435
| +149,882% | +$7.4M |
|
|
AYX
1037
CALL
DELISTED
Alteryx Inc
AYX
| $7.66M | 0.01% |
130,100
+75,900
| +140% | +$4.42M |
|
1038
CALL
Ciena
CIEN
$57.7B
| $7.65M | 0.01% |
145,700
-1,500
| -1% | -$74.9K |
|
1039
CALL
SoFi Technologies
SOFI
$21.4B
| $7.62M | 0.01% |
1,255,600
-830,100
| -40% | -$5.03M |
|
1040
CALL
Fastly Inc
FSLY
$3.04B
| $7.62M | 0.01% |
429,000
-99,800
| -19% | -$1.27M |
|
1041
PUT
Lyft
LYFT
$5.32B
| $7.61M | 0.01% |
821,000
+16,600
| +2% | +$201K |
|
1042
CALL
M&T Bank
MTB
$35.6B
| $7.6M | 0.01% |
63,600
+50,500
| +385% | +$7.33M |
|
1043
CALL
US Foods
USFD
$21B
| $7.6M | 0.01% |
205,700
-62,200
| -23% | -$2.31M |
|
1044
CALL
Universal Display
OLED
$3.71B
| $7.57M | 0.01% |
48,800
+38,700
| +383% | +$5.2M |
|
1045
Direxion Daily Gold Miners Index Bull 2X ETF
NUGT
$860M
| $7.57M | 0.01% |
180,452
+47,380
| +36% | +$1.78M |
|
1046
PUT
Hyatt Hotels
H
$17.3B
| $7.56M | 0.01% |
67,600
+43,600
| +182% | +$4.77M |
|
1047
PUT
FT Vest Gold Strategy Target Income ETF
IGLD
$505M
| $7.55M | 0.01% |
52,000
-21,100
| -29% | -$409K |
|
1048
CALL
Coupang
CPNG
$28.1B
| $7.54M | 0.01% |
471,600
-298,400
| -39% | -$4.62M |
|
1049
CALL
Schwab US Broad Market ETF
SCHB
$42.7B
| $7.53M | 0.01% |
332,700
-64,200
| -16% | -$1M |
|
1050
PUT
Fortinet
FTNT
$111B
| $7.52M | 0.01% |
113,200
-46,400
| -29% | -$2.64M |
|
Similar funds
Simplex Trading's Q1 2023 Portfolio in Review
As of Q1 2023, Simplex Trading held 10,803 positions worth $114B, up 24% from $91.9B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading deployed $10.1B of net new capital in Q1 2023, opening 1,536 new positions and adding to 3,665 existing holdings. Its largest new stake was Walmart Inc: 918,957 shares worth $45.2M.
By sector, the portfolio is most concentrated in Technology at 0.42% of assets, up from 0.35% a quarter earlier, followed by Consumer Discretionary and Healthcare.
On the sell side, the largest reduction was Meta Platforms (Facebook), an estimated $49M trimmed.
- Simplex Trading's largest Q1 2023 buy was Walmart Inc: 918,957 shares worth $45.2M.
- Simplex Trading added most to Apple in Q1 2023, an estimated $40.9M increase.
- Simplex Trading's biggest Q1 2023 reduction was Meta Platforms (Facebook), cutting an estimated $49M.
- Simplex Trading fully exited Amazon in Q1 2023, selling an estimated $189M.
- Simplex Trading's ten largest holdings make up 38% of its $114B portfolio in Q1 2023.
- Simplex Trading opened 1,536 new positions and closed 1,729 in Q1 2023.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $114B.
Based on Simplex Trading's 13F filing for Q1 2023, filed 27 Apr 2023.