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 | |
|---|---|---|---|---|---|---|
226
PUT
CrowdStrike
CRWD
$192B
| $60.9M | 0.07% |
2,313,600
+979,600
| +73% | +$33.5M |
|
227
PUT
Honeywell
HON
$73.8B
| $60.6M | 0.07% |
300,157
+98,673
| +49% | +$18.9M |
|
228
PUT
SLB Ltd
SLB
$71.3B
| $60.5M | 0.07% |
1,132,400
-515,100
| -31% | -$25.6M |
|
229
PUT
Las Vegas Sands
LVS
$30B
| $60.4M | 0.07% |
1,255,900
-247,200
| -16% | -$10.5M |
|
230
PUT
ARK Space & Defense Innovation ETF
ARKX
$817M
| $59.6M | 0.06% |
1,941,600
-831,100
| -30% | -$10.7M |
|
|
231
CALL
Honeywell
HON
$73.8B
| $59.2M | 0.06% |
293,154
+97,187
| +50% | +$18.6M |
|
232
PUT
United Airlines
UAL
$38.1B
| $59M | 0.06% |
1,566,200
+286,800
| +22% | +$11.6M |
|
233
CALL
Coinbase
COIN
$43.8B
| $58.9M | 0.06% |
1,664,600
+593,900
| +55% | +$31.3M |
|
234
CALL
PepsiCo
PEP
$185B
| $58.2M | 0.06% |
322,000
-1,700
| -0.5% | -$303K |
|
235
PUT
Amgen
AMGN
$198B
| $57.9M | 0.06% |
220,600
+73,600
| +50% | +$19.7M |
|
236
CALL
Marathon Petroleum
MPC
$92.2B
| $57.7M | 0.06% |
495,500
-150,100
| -23% | -$17.1M |
|
237
CALL
Mercado Libre
MELI
$91.2B
| $57.4M | 0.06% |
67,800
+25,900
| +62% | +$23.1M |
|
238
CALL
MongoDB
MDB
$24.5B
| $57.2M | 0.06% |
290,800
+113,500
| +64% | +$20.2M |
|
239
CALL
Take-Two Interactive
TTWO
$43.4B
| $57.2M | 0.06% |
549,000
+27,100
| +5% | +$2.93M |
|
240
CALL
Abbott
ABT
$175B
| $57M | 0.06% |
519,500
-50,000
| -9% | -$5.18M |
|
241
CALL
ASML
ASML
$692B
| $56.8M | 0.06% |
104,000
+39,100
| +60% | +$20.5M |
|
242
PUT
ServiceNow
NOW
$98.4B
| $56.6M | 0.06% |
729,500
-166,500
| -19% | -$13M |
|
243
CALL
Northrop Grumman
NOC
$74.6B
| $56.6M | 0.06% |
103,700
+40,200
| +63% | +$21M |
|
244
CALL
GE Aerospace
GE
$354B
| $55.5M | 0.06% |
1,118,910
-871,887
| -44% | -$42.9M |
|
245
PUT
Devon Energy
DVN
$51.8B
| $55.4M | 0.06% |
900,600
+244,100
| +37% | +$16.6M |
|
|
UWC
246
CALL
DELISTED
PROSHARES TR ULTRA RUSSELL3000
UWC
| $55.3M | 0.06% |
2,767,200
+57,500
| +2% | +$1.15M |
|
247
PUT
BP
BP
$112B
| $55.2M | 0.06% |
1,580,200
-1,056,500
| -40% | -$35.2M |
|
248
PUT
Newmont
NEM
$102B
| $54.8M | 0.06% |
1,212,700
+369,100
| +44% | +$16.5M |
|
249
CALL
Diamondback Energy
FANG
$57.1B
| $54.6M | 0.06% |
399,900
+106,100
| +36% | +$15.5M |
|
250
CALL
Workday
WDAY
$32.7B
| $54.6M | 0.06% |
326,100
+87,000
| +36% | +$13.6M |
|
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.