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 | |
|---|---|---|---|---|---|---|
1051
PUT
Kinder Morgan
KMI
$72.9B
| $7.52M | 0.01% |
429,400
+68,500
| +19% | +$1.22M |
|
1052
PUT
LPL Financial
LPLA
$25.9B
| $7.51M | 0.01% |
37,100
+3,200
| +9% | +$732K |
|
1053
Palantir
PLTR
$296B
| $7.5M | 0.01% |
887,342
+241,025
| +37% | +$1.89M |
|
1054
CALL
Baxter International
BAX
$11.2B
| $7.49M | 0.01% |
184,600
+46,000
| +33% | +$1.95M |
|
1055
PUT
Edwards Lifesciences
EW
$48.3B
| $7.47M | 0.01% |
90,300
-46,000
| -34% | -$3.62M |
|
1056
CALL
Annaly Capital Management
NLY
$16.7B
| $7.46M | 0.01% |
390,300
-9,100
| -2% | -$192K |
|
1057
PUT
Elevance Health
ELV
$82.3B
| $7.45M | 0.01% |
16,200
+3,300
| +26% | +$1.57M |
|
1058
CALL
Western Alliance Bancorporation
WAL
$9.06B
| $7.44M | 0.01% |
209,300
+194,200
| +1,286% | +$11.9M |
|
1059
CALL
Teleflex
TFX
$5.81B
| $7.42M | 0.01% |
29,300
+23,700
| +423% | +$5.74M |
|
1060
CALL
Centene
CNC
$31.5B
| $7.38M | 0.01% |
116,700
+65,900
| +130% | +$4.68M |
|
1061
CALL
Alnylam Pharmaceuticals
ALNY
$35.9B
| $7.37M | 0.01% |
36,800
-14,900
| -29% | -$3.13M |
|
1062
United Airlines
UAL
$37.4B
| $7.32M | 0.01% |
165,464
+163,464
| +8,173% | +$7.83M |
|
1063
PUT
Vail Resorts
MTN
$5.13B
| $7.31M | 0.01% |
31,300
+3,600
| +13% | +$868K |
|
1064
PUT
VF Corp
VFC
$6.49B
| $7.3M | 0.01% |
318,800
-297,900
| -48% | -$7.83M |
|
1065
CALL
Pacific Biosciences
PACB
$435M
| $7.28M | 0.01% |
629,100
+590,700
| +1,538% | +$5.87M |
|
1066
CALL
Vanguard Dividend Appreciation ETF
VIG
$110B
| $7.25M | 0.01% |
47,100
-12,600
| -21% | -$1.93M |
|
1067
CALL
Digital Realty Trust
DLR
$66.4B
| $7.25M | 0.01% |
73,700
+30,200
| +69% | +$3.18M |
|
1068
CALL
Canadian Pacific Kansas City
CP
$82B
| $7.24M | 0.01% |
94,100
+50,600
| +116% | +$3.91M |
|
1069
CALL
ClearShares Piton Intermediate Fixed Income ETF
PIFI
$97.3M
| $7.24M | 0.01% |
387,400
-7,200
| -2% | -$658K |
|
1070
PUT
Blackstone Mortgage Trust
BXMT
$2.78B
| $7.23M | 0.01% |
405,000
+319,800
| +375% | +$6.82M |
|
1071
PUT
Carvana
CVNA
$43.1B
| $7.21M | 0.01% |
3,684,500
-2,771,500
| -43% | -$4.81M |
|
1072
iShares MSCI China ETF
MCHI
$6.04B
| $7.21M | 0.01% |
+144,460
| New | +$7.35M |
|
1073
Ford
F
$56.4B
| $7.19M | 0.01% |
+570,639
| New | +$7.14M |
|
1074
CALL
BCE
BCE
$19.8B
| $7.16M | 0.01% |
159,800
-11,800
| -7% | -$533K |
|
1075
CALL
Ralph Lauren
RL
$22.1B
| $7.15M | 0.01% |
61,300
+8,400
| +16% | +$991K |
|
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.