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 |
Microsoft
MSFT
|
+$53.9M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.9M |
| 3 |
NVIDIA
NVDA
|
+$47.1M |
| 4 |
PayPal
PYPL
|
+$41.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$28.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$51.4M |
| 2 |
Walmart Inc
WMT
|
+$46.4M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 4 |
Adobe
ADBE
|
+$33.5M |
| 5 |
Starbucks
SBUX
|
+$26.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.41% |
| 2 | Healthcare | 0.21% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Communication Services | 0.2% |
| 5 | Financials | 0.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2476
PUT
Global Ship Lease
GSL
$1.57B
| $1.15M | ﹤0.01% |
59,300
-400
| -0.7% | -$7.54K |
|
2477
Viatris
VTRS
$20.1B
| $1.15M | ﹤0.01% |
115,288
+105,812
| +1,117% | +$1.01M |
|
2478
PUT
DigitalOcean
DOCN
$14.4B
| $1.15M | ﹤0.01% |
28,600
-2,500
| -8% | -$92.2K |
|
2479
State Street Health Care Select Sector SPDR ETF
XLV
$42.1B
| $1.15M | ﹤0.01% |
8,644
-7,729
| -47% | -$1.02M |
|
2480
Nano X Imaging
NNOX
$62.4M
| $1.15M | ﹤0.01% |
73,974
+67,674
| +1,074% | +$938K |
|
|
ARVL
2481
CALL
DELISTED
Arrival Ordinary Shares
ARVL
| $1.15M | ﹤0.01% |
444,100
+433,858
| +4,236% | +$1.37M |
|
2482
CALL
Companhia Siderúrgica Nacional
SID
$1.43B
| $1.14M | ﹤0.01% |
441,400
+177,400
| +67% | +$489K |
|
|
MORF
2483
DELISTED
Morphic Holding, Inc. Common Stock
MORF
| $1.14M | ﹤0.01% |
19,919
+893
| +5% | +$46.6K |
|
2484
CALL
2x Long VIX Futures ETF
UVIX
$286M
| $1.14M | ﹤0.01% |
85
+20
| +31% | +$389K |
|
2485
Banco Macro
BMA
$5.7B
| $1.14M | ﹤0.01% |
+43,118
| New | +$862K |
|
2486
PUT
Perrigo
PRGO
$1.4B
| $1.14M | ﹤0.01% |
33,500
+24,100
| +256% | +$837K |
|
2487
Vera Therapeutics
VERA
$2.54B
| $1.13M | ﹤0.01% |
70,522
+61,030
| +643% | +$551K |
|
2488
PUT
Hannon Armstrong Sustainable Infrastructure Capital
HASI
$4.9B
| $1.13M | ﹤0.01% |
45,200
+38,400
| +565% | +$1.01M |
|
2489
PUT
Ginkgo Bioworks
DNA
$481M
| $1.13M | ﹤0.01% |
15,175
+4,100
| +37% | +$243K |
|
|
AGNT
2490
CALL
AGNT Inc
AGNT
$664M
| $1.13M | ﹤0.01% |
55,700
+45,500
| +446% | +$680K |
|
2491
CALL
Howmet Aerospace
HWM
$116B
| $1.13M | ﹤0.01% |
22,800
+7,100
| +45% | +$316K |
|
2492
CALL
American Water Works
AWK
$26.3B
| $1.13M | ﹤0.01% |
7,900
+1,900
| +32% | +$279K |
|
|
RVNC
2493
CALL
DELISTED
Revance Therapeutics, Inc.
RVNC
| $1.13M | ﹤0.01% |
44,500
-4,700
| -10% | -$146K |
|
2494
CALL
Phillips Edison & Co
PECO
$5.48B
| $1.12M | ﹤0.01% |
33,000
+12,100
| +58% | +$378K |
|
2495
PUT
Aramark
ARMK
$15B
| $1.12M | ﹤0.01% |
36,149
-35,594
| -50% | -$970K |
|
2496
CALL
Fiverr
FVRR
$376M
| $1.12M | ﹤0.01% |
43,200
+27,200
| +170% | +$820K |
|
|
SAVE
2497
PUT
DELISTED
Spirit Airlines, Inc.
SAVE
| $1.12M | ﹤0.01% |
65,500
-21,900
| -25% | -$359K |
|
2498
PUT
Copart
CPRT
$25.9B
| $1.12M | ﹤0.01% |
24,600
-30,600
| -55% | -$1.27M |
|
2499
RXO
RXO
$4.23B
| $1.12M | ﹤0.01% |
+49,489
| New | +$997K |
|
|
HIVE
2500
CALL
HIVE Digital Technologies
HIVE
$792M
| $1.12M | ﹤0.01% |
242,000
+101,800
| +73% | +$343K |
|
Similar funds
Simplex Trading's Q2 2023 Portfolio in Review
As of Q2 2023, Simplex Trading held 10,535 positions worth $122B, up 6.9% from $114B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q2 2023 filing shows 1,474 new, 3,350 increased, 3,913 reduced and 1,517 closed positions. Its largest new stake was Microsoft: 171,935 shares worth $58.5M. The largest sale was Apple, an estimated $51.4M.
By sector, the portfolio is most concentrated in Technology at 0.41% of assets, down from 0.42% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q2 2023 buy was Microsoft: 171,935 shares worth $58.5M.
- Simplex Trading added most to iShares 20+ Year Treasury Bond ETF in Q2 2023, an estimated $52.9M increase.
- Simplex Trading's biggest Q2 2023 reduction was Adobe, cutting an estimated $33.5M.
- Simplex Trading fully exited Apple in Q2 2023, selling an estimated $51.4M.
- Simplex Trading's ten largest holdings make up 43% of its $122B portfolio in Q2 2023.
- Simplex Trading opened 1,474 new positions and closed 1,517 in Q2 2023.
- Simplex Trading's portfolio value rose 6.9% quarter-over-quarter to $122B.
Based on Simplex Trading's 13F filing for Q2 2023, filed 4 Aug 2023.