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 | |
|---|---|---|---|---|---|---|
3751
CALL
Equitable Holdings
EQH
$13.5B
| $357K | ﹤0.01% |
12,600
-2,200
| -15% | -$62.1K |
|
3752
PUT
New Fortress Energy
NFE
$94.3M
| $357K | ﹤0.01% |
10,900
-200
| -2% | -$5.88K |
|
3753
CALL
WSFS Financial
WSFS
$4.2B
| $357K | ﹤0.01% |
9,800
+9,500
| +3,167% | +$379K |
|
3754
CALL
FTI Consulting
FCN
$5.04B
| $356K | ﹤0.01% |
2,000
-200
| -9% | -$37.3K |
|
3755
PUT
H.B. Fuller
FUL
$3.07B
| $356K | ﹤0.01% |
+5,200
| New | +$367K |
|
3756
PUT
Paysafe
PSFE
$463M
| $356K | ﹤0.01% |
29,700
+3,300
| +13% | +$40.2K |
|
|
VZIO
3757
CALL
DELISTED
VIZIO Holding Corp.
VZIO
| $356K | ﹤0.01% |
65,900
+38,100
| +137% | +$245K |
|
3758
CALL
Banco Macro
BMA
$5.81B
| $355K | ﹤0.01% |
18,000
-4,600
| -20% | -$112K |
|
3759
PUT
Box
BOX
$4.36B
| $355K | ﹤0.01% |
14,700
-10,900
| -43% | -$311K |
|
3760
CALL
SkinHealth Systems
SKIN
$90.5M
| $355K | ﹤0.01% |
59,100
-7,800
| -12% | -$54.8K |
|
|
3761
SkinHealth Systems
SKIN
$90.5M
| $354K | ﹤0.01% |
58,959
+48,138
| +445% | +$338K |
|
3762
PUT
United Natural Foods
UNFI
$3.07B
| $353K | ﹤0.01% |
25,000
+7,600
| +44% | +$149K |
|
|
VSXY
3763
PUT
Victoria's Secret
VSXY
$7.1B
| $353K | ﹤0.01% |
21,200
-1,000
| -5% | -$18.9K |
|
|
VRN
3764
DELISTED
Veren
VRN
| $353K | ﹤0.01% |
42,578
-856
| -2% | -$6.82K |
|
3765
CALL
CareTrust REIT
CTRE
$10.1B
| $352K | ﹤0.01% |
17,200
+8,500
| +98% | +$172K |
|
3766
PUT
National Beverage
FIZZ
$3.05B
| $352K | ﹤0.01% |
+7,500
| New | +$378K |
|
3767
CALL
HCI Group
HCI
$2.29B
| $352K | ﹤0.01% |
+6,500
| New | +$370K |
|
3768
CALL
Pacira BioSciences
PCRX
$1.05B
| $352K | ﹤0.01% |
11,500
+7,000
| +156% | +$252K |
|
3769
CALL
Runway Growth Finance
RWAY
$234M
| $352K | ﹤0.01% |
27,500
-71,000
| -72% | -$913K |
|
3770
CALL
Vivid Seats
SEAT
$88.7M
| $352K | ﹤0.01% |
+2,745
| New | +$405K |
|
|
TBCH
3771
Turtle Beach Corp
TBCH
$258M
| $352K | ﹤0.01% |
38,818
-107,192
| -73% | -$1.15M |
|
|
DMC
3772
PUT
Del Monte Corp
DMC
$1.37B
| $351K | ﹤0.01% |
13,600
-100
| -0.7% | -$2.62K |
|
3773
PUT
Grocery Outlet
GO
$902M
| $351K | ﹤0.01% |
12,200
+10,400
| +578% | +$331K |
|
3774
CALL
Morningstar
MORN
$7.38B
| $351K | ﹤0.01% |
1,500
-2,400
| -62% | -$542K |
|
3775
CALL
Hims & Hers Health
HIMS
$6.79B
| $350K | ﹤0.01% |
55,800
-28,300
| -34% | -$210K |
|
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.