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
|
+$114M |
| 2 |
NVIDIA
NVDA
|
+$85.9M |
| 3 |
Citigroup
C
|
+$61.5M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.5M |
| 5 |
Pfizer
PFE
|
+$41.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$467M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$71.2M |
| 3 |
Meta Platforms (Facebook)
META
|
+$47.6M |
| 4 |
Intel
INTC
|
+$41.9M |
| 5 |
TSMC
TSM
|
+$35.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.51% |
| 2 | Financials | 0.35% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Healthcare | 0.25% |
| 5 | Industrials | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
4801
Teucrium Wheat Fund
WEAT
$285M
| $173K | ﹤0.01% |
3,788
-1,427
| -27% | -$60.2K |
|
4802
PUT
West Fraser Timber
WFG
$5.08B
| $173K | ﹤0.01% |
2,400
-14,700
| -86% | -$1.28M |
|
|
AY
4803
PUT
DELISTED
Atlantica Sustainable Infrastructure plc Ordinary Shares
AY
| $173K | ﹤0.01% |
6,600
-7,600
| -54% | -$251K |
|
|
RAM
4804
CALL
DELISTED
Aries I Acquisition Corporation Class A Ordinary Share
RAM
| $173K | ﹤0.01% |
+16,900
| New | +$175K |
|
4805
CALL
Brookfield Infrastructure Partners
BIP
$19.2B
| $172K | ﹤0.01% |
4,800
+4,500
| +1,500% | +$181K |
|
4806
PUT
Cirrus Logic
CRUS
$6.53B
| $172K | ﹤0.01% |
2,500
+1,400
| +127% | +$110K |
|
|
LEV
4807
CALL
DELISTED
The Lion Electric Company
LEV
| $172K | ﹤0.01% |
60,400
-11,300
| -16% | -$48.4K |
|
|
UNVR
4808
CALL
DELISTED
Univar Solutions Inc.
UNVR
| $172K | ﹤0.01% |
7,600
+7,300
| +2,433% | +$183K |
|
|
MGI
4809
CALL
DELISTED
MoneyGram International, Inc. New
MGI
| $172K | ﹤0.01% |
16,600
-49,600
| -75% | -$511K |
|
4810
CALL
Adaptive Biotechnologies
ADPT
$3.59B
| $171K | ﹤0.01% |
24,100
-19,400
| -45% | -$183K |
|
4811
PUT
Angi Inc
ANGI
$229M
| $171K | ﹤0.01% |
5,810
+240
| +4% | +$10.6K |
|
4812
CALL
CarGurus
CARG
$3.27B
| $171K | ﹤0.01% |
12,100
-107,200
| -90% | -$2.17M |
|
4813
CALL
Dycom Industries
DY
$12B
| $171K | ﹤0.01% |
1,800
-200
| -10% | -$20.9K |
|
4814
CALL
Dyadic International
DYAI
$38.3M
| $171K | ﹤0.01% |
89,700
+1,300
| +1% | +$3.46K |
|
|
GOGL
4815
DELISTED
Golden Ocean Group
GOGL
| $171K | ﹤0.01% |
22,964
+6,327
| +38% | +$63.4K |
|
4816
PUT
Samsara
IOT
$21.7B
| $171K | ﹤0.01% |
14,200
-1,000
| -7% | -$14.2K |
|
|
TRVG
4817
CALL
trivago
TRVG
$373M
| $171K | ﹤0.01% |
29,500
+25,080
| +567% | +$188K |
|
|
ZUO
4818
CALL
DELISTED
Zuora, Inc.
ZUO
| $171K | ﹤0.01% |
23,200
+1,900
| +9% | +$16.4K |
|
4819
PUT
Advanced Energy
AEIS
$11.6B
| $170K | ﹤0.01% |
2,200
+2,000
| +1,000% | +$172K |
|
4820
PUT
AquaBounty Technologies
AQB
$4.66M
| $170K | ﹤0.01% |
10,940
-315
| -3% | -$8.3K |
|
|
LONA
4821
CALL
LeonaBio Inc
LONA
$66.3M
| $170K | ﹤0.01% |
5,740
-9,810
| -63% | -$339K |
|
4822
PUT
Diana Shipping
DSX
$302M
| $170K | ﹤0.01% |
59,043
+26,826
| +83% | +$107K |
|
4823
CALL
US Global Investors
GROW
$35.5M
| $170K | ﹤0.01% |
59,300
+34,000
| +134% | +$132K |
|
4824
PUT
Hess Midstream
HESM
$5.24B
| $170K | ﹤0.01% |
6,700
+3,000
| +81% | +$85.7K |
|
|
ISPO
4825
CALL
DELISTED
Inspirato
ISPO
| $170K | ﹤0.01% |
3,605
+260
| +8% | +$19.2K |
|
Similar funds
Simplex Trading's Q3 2022 Portfolio in Review
As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.
By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.
- Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
- Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
- Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
- Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
- Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
- Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
- Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.
Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.