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 | |
|---|---|---|---|---|---|---|
3701
PUT
United Natural Foods
UNFI
$3.07B
| $340K | ﹤0.01% |
17,400
+15,800
| +988% | +$397K |
|
|
BECN
3702
PUT
DELISTED
Beacon Roofing Supply, Inc.
BECN
| $340K | ﹤0.01% |
4,100
+2,300
| +128% | +$152K |
|
|
LLAP
3703
CALL
DELISTED
Terran Orbital Corporation
LLAP
| $340K | ﹤0.01% |
226,900
+162,100
| +250% | +$257K |
|
3704
PUT
Cooper-Standard Automotive
CPS
$526M
| $339K | ﹤0.01% |
23,800
-9,600
| -29% | -$117K |
|
3705
CALL
McEwen Inc
MUX
$1.03B
| $339K | ﹤0.01% |
47,200
-166,100
| -78% | -$1.34M |
|
3706
CALL
Old Republic International
ORI
$10.8B
| $339K | ﹤0.01% |
13,500
-52,500
| -80% | -$1.31M |
|
3707
CALL
Upbound Group
UPBD
$1.26B
| $339K | ﹤0.01% |
10,900
-25,000
| -70% | -$731K |
|
3708
PUT
VSE Corp
VSEC
$5.59B
| $339K | ﹤0.01% |
+6,200
| New | +$300K |
|
3709
Wendy's
WEN
$1.46B
| $339K | ﹤0.01% |
+15,615
| New | +$348K |
|
|
DCH
3710
CALL
Dauch Corp
DCH
$1.33B
| $338K | ﹤0.01% |
40,900
-21,900
| -35% | -$162K |
|
3711
CALL
CVR Energy
CVI
$3.39B
| $338K | ﹤0.01% |
11,300
-3,700
| -25% | -$99.6K |
|
|
GOOS
3712
Canada Goose Holdings
GOOS
$903M
| $338K | ﹤0.01% |
+19,002
| New | +$342K |
|
3713
CALL
Sibanye-Stillwater
SBSW
$5.93B
| $338K | ﹤0.01% |
54,300
+30,500
| +128% | +$241K |
|
3714
CALL
First Financial Bancorp
FFBC
$3.55B
| $337K | ﹤0.01% |
16,500
+2,400
| +17% | +$48.8K |
|
3715
CALL
Genie Energy
GNE
$378M
| $337K | ﹤0.01% |
23,900
+600
| +3% | +$8.89K |
|
3716
PUT
LiveRamp
RAMP
$2.29B
| $337K | ﹤0.01% |
11,800
+4,300
| +57% | +$107K |
|
3717
CALL
Kinsale Capital Group
KNSL
$8.43B
| $336K | ﹤0.01% |
900
+600
| +200% | +$199K |
|
|
NETI
3718
DELISTED
Eneti Inc.
NETI
| $336K | ﹤0.01% |
+27,771
| New | +$271K |
|
3719
PUT
WEC Energy
WEC
$37B
| $335K | ﹤0.01% |
3,800
-8,600
| -69% | -$795K |
|
3720
BigBear.ai
BBAI
$1.32B
| $334K | ﹤0.01% |
142,212
-71,685
| -34% | -$182K |
|
3721
PUT
MaxLinear
MXL
$5.35B
| $334K | ﹤0.01% |
10,600
+8,600
| +430% | +$249K |
|
|
ACRE
3722
CALL
Ares Commercial Real Estate
ACRE
$256M
| $333K | ﹤0.01% |
32,900
-16,100
| -33% | -$147K |
|
3723
CALL
Future Fuel
FF
$202M
| $333K | ﹤0.01% |
37,700
-8,600
| -19% | -$71.9K |
|
|
EVBG
3724
CALL
DELISTED
Everbridge, Inc. Common Stock
EVBG
| $333K | ﹤0.01% |
12,400
+9,900
| +396% | +$267K |
|
3725
Advanced Energy
AEIS
$10.9B
| $331K | ﹤0.01% |
+2,970
| New | +$283K |
|
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.