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 | |
|---|---|---|---|---|---|---|
|
ATHX
4226
CALL
DELISTED
Athersys, Inc. Common Stock
ATHX
| $268K | ﹤0.01% |
145,000
+141,868
| +4,530% | +$619K |
|
4227
PUT
Aurinia Pharmaceuticals
AUPH
$1.91B
| $267K | ﹤0.01% |
35,600
+1,600
| +5% | +$13.8K |
|
4228
Helix Energy Solutions
HLX
$1.4B
| $267K | ﹤0.01% |
+69,310
| New | +$263K |
|
4229
International Money Express
IMXI
$357M
| $267K | ﹤0.01% |
11,745
-3,624
| -24% | -$85.2K |
|
4230
CALL
Keros Therapeutics
KROS
$199M
| $267K | ﹤0.01% |
7,100
| – | – |
|
4231
Papa John's
PZZA
$984M
| $267K | ﹤0.01% |
+3,827
| New | +$325K |
|
|
BPT
4232
CALL
DELISTED
BP Prudhoe Bay Royalty Trust
BPT
| $266K | ﹤0.01% |
22,300
-103,600
| -82% | -$1.68M |
|
4233
PUT
Carriage Services
CSV
$641M
| $266K | ﹤0.01% |
8,300
+2,500
| +43% | +$93.4K |
|
4234
CALL
Masco
MAS
$14.1B
| $266K | ﹤0.01% |
5,700
+5,500
| +2,750% | +$286K |
|
4235
CALL
Newegg Commerce
NEGG
$279M
| $266K | ﹤0.01% |
5,705
+3,995
| +234% | +$274K |
|
4236
CALL
Xeris Biopharma Holdings
XERS
$1.39B
| $266K | ﹤0.01% |
170,700
-30,700
| -15% | -$50.8K |
|
4237
CALL
CoreCivic
CXW
$2.96B
| $265K | ﹤0.01% |
30,000
+10,900
| +57% | +$110K |
|
4238
CALL
Eve Holding
EVEX
$808M
| $265K | ﹤0.01% |
28,700
-24,800
| -46% | -$196K |
|
4239
PUT
Invesco CurrencyShares Australian Dollar Trust
FXA
$97.6M
| $265K | ﹤0.01% |
4,200
+2,400
| +133% | +$162K |
|
|
HA
4240
PUT
DELISTED
Hawaiian Holdings, Inc.
HA
| $265K | ﹤0.01% |
20,200
+15,600
| +339% | +$238K |
|
|
FUV
4241
CALL
DELISTED
Arcimoto, Inc. Common Stock
FUV
| $265K | ﹤0.01% |
9,625
-990
| -9% | -$49.4K |
|
4242
PUT
Braze
BRZE
$2.81B
| $264K | ﹤0.01% |
7,600
+7,400
| +3,700% | +$312K |
|
|
FOLD
4243
CALL
DELISTED
Amicus Therapeutics
FOLD
| $264K | ﹤0.01% |
25,300
-138,100
| -85% | -$1.54M |
|
4244
CALL
Goldman Sachs BDC
GSBD
$969M
| $264K | ﹤0.01% |
18,300
+8,200
| +81% | +$139K |
|
|
MAPS
4245
CALL
DELISTED
WM TECHNOLOGY INC A
MAPS
| $264K | ﹤0.01% |
164,200
-47,200
| -22% | -$134K |
|
4246
Paycom
PAYC
$7.64B
| $264K | ﹤0.01% |
803
-1,109
| -58% | -$382K |
|
4247
PUT
Reinsurance Group of America
RGA
$15.5B
| $264K | ﹤0.01% |
2,100
-100
| -5% | -$12.3K |
|
4248
Smith Micro Software
SMSI
$14.5M
| $264K | ﹤0.01% |
2,924
+2
| +0.1% | +$203 |
|
4249
PUT
Sphere Entertainment
SPHR
$5.14B
| $264K | ﹤0.01% |
6,000
+700
| +13% | +$39.3K |
|
|
SLGC
4250
DELISTED
SomaLogic, Inc. Class A Common Stock
SLGC
| $264K | ﹤0.01% |
91,364
+57,729
| +172% | +$243K |
|
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.