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 |
Pfizer
PFE
|
+$89.5M |
| 2 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$85.5M |
| 3 |
Boeing
BA
|
+$71M |
| 4 |
Intel
INTC
|
+$60.7M |
| 5 |
Meta Platforms (Facebook)
META
|
+$48.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$104M |
| 3 |
Alibaba
BABA
|
+$82.8M |
| 4 |
Walt Disney
DIS
|
+$68.5M |
| 5 |
Citigroup
C
|
+$59.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.38% |
| 2 | Healthcare | 0.27% |
| 3 | Consumer Discretionary | 0.25% |
| 4 | Industrials | 0.17% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3051
CALL
Procept Biorobotics
PRCT
$1.01B
| $1.07M | ﹤0.01% |
21,600
-3,700
| -15% | -$176K |
|
3052
CALL
Seadrill
SDRL
$2.69B
| $1.07M | ﹤0.01% |
21,200
+10,100
| +91% | +$459K |
|
3053
CALL
Payoneer
PAYO
$2.41B
| $1.06M | ﹤0.01% |
219,000
-14,100
| -6% | -$68.7K |
|
3054
PUT
Sportradar
SRAD
$4.34B
| $1.06M | ﹤0.01% |
91,400
+77,200
| +544% | +$814K |
|
|
GMS
3055
PUT
DELISTED
GMS Inc
GMS
| $1.06M | ﹤0.01% |
10,900
-3,900
| -26% | -$341K |
|
3056
Acadia Pharmaceuticals
ACAD
$4.35B
| $1.06M | ﹤0.01% |
57,376
-2,989
| -5% | -$74.1K |
|
3057
CALL
Goosehead Insurance
GSHD
$1.47B
| $1.06M | ﹤0.01% |
15,900
+14,500
| +1,036% | +$1.11M |
|
3058
PUT
ICICI Bank
IBN
$107B
| $1.06M | ﹤0.01% |
40,000
-16,800
| -30% | -$419K |
|
3059
Illinois Tool Works
ITW
$81.9B
| $1.06M | ﹤0.01% |
+3,937
| New | +$1.02M |
|
3060
PUT
ChargePoint
CHPT
$140M
| $1.05M | ﹤0.01% |
27,770
-1,905
| -6% | -$74.7K |
|
3061
CALL
Compass
COMP
$8.82B
| $1.05M | ﹤0.01% |
292,800
+241,700
| +473% | +$854K |
|
|
RCM
3062
PUT
DELISTED
R1 RCM Inc. Common Stock
RCM
| $1.05M | ﹤0.01% |
81,600
+75,400
| +1,216% | +$876K |
|
3063
CALL
Ares Management
ARES
$28.8B
| $1.05M | ﹤0.01% |
7,900
+4,200
| +114% | +$536K |
|
|
FFWM
3064
PUT
DELISTED
First Foundation Inc
FFWM
| $1.05M | ﹤0.01% |
139,000
+136,000
| +4,533% | +$1.16M |
|
|
SNV
3065
CALL
DELISTED
Synovus
SNV
| $1.05M | ﹤0.01% |
26,200
-6,900
| -21% | -$259K |
|
3066
PUT
Cheesecake Factory
CAKE
$4.32B
| $1.05M | ﹤0.01% |
29,000
-16,900
| -37% | -$588K |
|
3067
NETGEAR
NTGR
$681M
| $1.05M | ﹤0.01% |
66,347
+40,126
| +153% | +$584K |
|
3068
PUT
Aurinia Pharmaceuticals
AUPH
$1.96B
| $1.04M | ﹤0.01% |
208,600
-39,200
| -16% | -$266K |
|
3069
CALL
Intellia Therapeutics
NTLA
$1.49B
| $1.04M | ﹤0.01% |
38,000
+11,800
| +45% | +$328K |
|
|
BPMC
3070
CALL
DELISTED
Blueprint Medicines
BPMC
| $1.04M | ﹤0.01% |
11,000
-2,000
| -15% | -$172K |
|
|
PCH
3071
PUT
DELISTED
PotlatchDeltic
PCH
| $1.04M | ﹤0.01% |
+22,200
| New | +$1.02M |
|
3072
Global X Silver Miners ETF NEW
SIL
$4.09B
| $1.04M | ﹤0.01% |
37,999
-9,006
| -19% | -$228K |
|
3073
Ardelyx
ARDX
$1.25B
| $1.04M | ﹤0.01% |
142,649
-258,030
| -64% | -$2.21M |
|
3074
PUT
Banco Bradesco
BBD
$38.5B
| $1.04M | ﹤0.01% |
363,800
-124,650
| -26% | -$371K |
|
3075
PUT
Leonardo DRS
DRS
$12.9B
| $1.04M | ﹤0.01% |
47,100
-5,000
| -10% | -$104K |
|
Similar funds
Simplex Trading's Q1 2024 Portfolio in Review
As of Q1 2024, Simplex Trading held 10,366 positions worth $173B, up 11% from $156B the previous quarter. Its ten largest holdings account for 47% of the portfolio.
Simplex Trading's Q1 2024 filing shows 1,549 new, 3,675 increased, 3,484 reduced and 1,506 closed positions. Its largest new stake was Boeing: 345,653 shares worth $66.7M. The largest sale was NVIDIA, an estimated $117M.
By sector, the portfolio is most concentrated in Technology at 0.38% of assets, up from 0.33% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2024 buy was Boeing: 345,653 shares worth $66.7M.
- Simplex Trading added most to Pfizer in Q1 2024, an estimated $89.5M increase.
- Simplex Trading's biggest Q1 2024 reduction was NVIDIA, cutting an estimated $117M.
- Simplex Trading fully exited Citigroup in Q1 2024, selling an estimated $59.8M.
- Simplex Trading's ten largest holdings make up 47% of its $173B portfolio in Q1 2024.
- Simplex Trading opened 1,549 new positions and closed 1,506 in Q1 2024.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $173B.
Based on Simplex Trading's 13F filing for Q1 2024, filed 25 Apr 2024.