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 | |
|---|---|---|---|---|---|---|
6176
PUT
CBRE Group
CBRE
$43B
| $60K | ﹤0.01% |
900
-2,100
| -70% | -$166K |
|
6177
GrafTech
EAF
$195M
| $60K | ﹤0.01% |
1,398
+1,208
| +636% | +$76.8K |
|
|
EARN
6178
CALL
Ellington Residential Mortgage REIT
EARN
$164M
| $60K | ﹤0.01% |
9,800
-5,400
| -36% | -$43K |
|
6179
CALL
Hudbay
HBM
$10.4B
| $60K | ﹤0.01% |
14,900
+8,000
| +116% | +$32K |
|
6180
CALL
Jones Lang LaSalle
JLL
$16.8B
| $60K | ﹤0.01% |
400
+100
| +33% | +$17.4K |
|
6181
PUT
Kura Oncology
KURA
$816M
| $60K | ﹤0.01% |
4,400
+4,200
| +2,100% | +$64.8K |
|
6182
PUT
nVent Electric
NVT
$25.8B
| $60K | ﹤0.01% |
1,900
+900
| +90% | +$30.1K |
|
|
ACH
6183
PUT
Accendra Health
ACH
$261M
| $60K | ﹤0.01% |
2,500
+500
| +25% | +$15.4K |
|
6184
PUT
Precigen
PGEN
$2.36B
| $60K | ﹤0.01% |
28,700
+12,500
| +77% | +$26.4K |
|
|
PROF
6185
CALL
Profound Medical
PROF
$299M
| $60K | ﹤0.01% |
14,900
| – | – |
|
6186
CALL
ProPetro Holding
PUMP
$1.37B
| $60K | ﹤0.01% |
7,500
-19,000
| -72% | -$170K |
|
6187
Red Violet
RDVT
$968M
| $60K | ﹤0.01% |
+3,518
| New | +$70.1K |
|
6188
CALL
Revvity
RVTY
$12.9B
| $60K | ﹤0.01% |
500
-3,100
| -86% | -$437K |
|
|
SACH
6189
CALL
Sachem Capital Corp
SACH
$41.3M
| $60K | ﹤0.01% |
18,300
+3,800
| +26% | +$17K |
|
6190
CALL
SELLAS Life Sciences
SLS
$2.21B
| $60K | ﹤0.01% |
29,800
+600
| +2% | +$1.66K |
|
|
WPRT
6191
PUT
Westport Fuel Systems
WPRT
$33.4M
| $60K | ﹤0.01% |
6,920
-440
| -6% | -$4.87K |
|
6192
PUT
Willis Towers Watson
WTW
$31.7B
| $60K | ﹤0.01% |
300
+100
| +50% | +$20.6K |
|
|
TVRD
6193
PUT
Tvardi Therapeutics
TVRD
$19M
| $60K | ﹤0.01% |
181
+37
| +26% | +$13.4K |
|
6194
CALL
ALX Oncology
ALXO
$260M
| $59K | ﹤0.01% |
6,200
-7,700
| -55% | -$89.7K |
|
6195
Amalgamated Financial
AMAL
$1.48B
| $59K | ﹤0.01% |
2,639
+1,939
| +277% | +$43.5K |
|
6196
Arqit Quantum
ARQQ
$321M
| $59K | ﹤0.01% |
+420
| New | +$64.6K |
|
|
CLDT
6197
CALL
Chatham Lodging
CLDT
$614M
| $59K | ﹤0.01% |
6,000
-9,100
| -60% | -$109K |
|
6198
PUT
Clarivate
CLVT
$1.24B
| $59K | ﹤0.01% |
6,300
+700
| +13% | +$8.86K |
|
6199
PUT
Camden Property Trust
CPT
$11B
| $59K | ﹤0.01% |
500
-100
| -17% | -$13.4K |
|
6200
1-800-Flowers.com
FLWS
$269M
| $59K | ﹤0.01% |
+9,167
| New | +$81.1K |
|
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.