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
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
201
PUT
Pinduoduo
PDD
$119B
| $74.1M | 0.08% |
908,900
+253,700
| +39% | +$17.7M |
|
202
PUT
Blackrock
BLK
$164B
| $73.8M | 0.08% |
104,100
+16,600
| +19% | +$11.1M |
|
203
CALL
Wells Fargo
WFC
$262B
| $73.7M | 0.08% |
1,785,700
-548,200
| -23% | -$24.3M |
|
204
PUT
Pinterest
PINS
$12.6B
| $72.9M | 0.08% |
3,002,700
+1,345,800
| +81% | +$32.1M |
|
205
CALL
Enphase Energy
ENPH
$5.22B
| $72.4M | 0.08% |
273,200
-86,300
| -24% | -$25.1M |
|
206
CALL
Biogen
BIIB
$29.2B
| $71.6M | 0.08% |
258,500
-135,900
| -34% | -$38.4M |
|
207
CALL
American Airlines Group
AAL
$9.78B
| $71.3M | 0.08% |
5,602,900
+2,325,200
| +71% | +$31.5M |
|
208
CALL
Direxion Daily S&P Oil & Gas Exp. & Prod. Bull 2X ETF
GUSH
$254M
| $70.4M | 0.08% |
5,889,200
-1,080,000
| -15% | -$45.6M |
|
209
CALL
United Parcel Service
UPS
$98.5B
| $70.2M | 0.08% |
403,600
-87,000
| -18% | -$15.1M |
|
210
PUT
Lowe's Companies
LOW
$115B
| $69.4M | 0.08% |
348,500
-67,200
| -16% | -$13.4M |
|
211
PUT
ASML
ASML
$692B
| $69.3M | 0.08% |
126,800
-5,400
| -4% | -$2.83M |
|
212
CALL
General Motors
GM
$74.1B
| $69.1M | 0.08% |
2,055,500
-532,600
| -21% | -$19.7M |
|
213
CALL
Charter Communications
CHTR
$15.9B
| $68.3M | 0.07% |
201,400
+133,300
| +196% | +$46.8M |
|
|
214
PUT
United Parcel Service
UPS
$98.5B
| $67.9M | 0.07% |
390,400
+119,200
| +44% | +$20.6M |
|
215
PUT
MongoDB
MDB
$24.5B
| $67.8M | 0.07% |
344,300
+190,500
| +124% | +$33.9M |
|
216
PUT
Royal Caribbean
RCL
$76.7B
| $67.5M | 0.07% |
1,365,000
+140,300
| +11% | +$7.36M |
|
217
CALL
Baidu
BIDU
$36.6B
| $66.2M | 0.07% |
578,900
-12,500
| -2% | -$1.28M |
|
218
PUT
Humana
HUM
$47.7B
| $66.1M | 0.07% |
129,000
+96,600
| +298% | +$50.8M |
|
219
PUT
Coinbase
COIN
$43.8B
| $66M | 0.07% |
1,863,600
+930,800
| +100% | +$49M |
|
220
CALL
Eli Lilly
LLY
$1.04T
| $65.8M | 0.07% |
179,800
-50,300
| -22% | -$17.8M |
|
221
CALL
First Solar
FSLR
$22.4B
| $65.4M | 0.07% |
436,400
+47,000
| +12% | +$6.96M |
|
222
PUT
Intuit
INTU
$77.8B
| $64.3M | 0.07% |
165,100
-52,900
| -24% | -$21M |
|
223
PUT
Target
TGT
$62.6B
| $62.6M | 0.07% |
419,800
+61,000
| +17% | +$9.57M |
|
224
PUT
Wynn Resorts
WYNN
$9.79B
| $62M | 0.07% |
751,200
+199,800
| +36% | +$14.6M |
|
225
CALL
Texas Instruments
TXN
$268B
| $61.9M | 0.07% |
374,500
-76,800
| -17% | -$12.8M |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.