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 | |
|---|---|---|---|---|---|---|
|
SLI
6176
CALL
Standard Lithium
SLI
$502M
| $39K | ﹤0.01% |
13,400
+200
| +2% | +$773 |
|
6177
CALL
Sasol
SSL
$7.5B
| $39K | ﹤0.01% |
2,500
+200
| +9% | +$3.31K |
|
6178
Veritone
VERI
$101M
| $39K | ﹤0.01% |
7,423
+5,452
| +277% | +$35K |
|
6179
CALL
Vor Biopharma
VOR
$1.15B
| $39K | ﹤0.01% |
295
-95
| -24% | -$9.4K |
|
|
ASTR
6180
DELISTED
Astra Space, Inc. Class A Common Stock
ASTR
| $39K | ﹤0.01% |
6,076
-887
| -13% | -$6.97K |
|
|
COW
6181
DELISTED
iPath Series B Bloomberg Livestock Subindex Total ReturnSM ETN
COW
| $39K | ﹤0.01% |
989
+36
| +4% | +$1.42K |
|
6182
Algoma Steel
ASTL
$406M
| $38K | ﹤0.01% |
+6,016
| New | +$39.5K |
|
6183
PUT
BARK
BARK
$81.8M
| $38K | ﹤0.01% |
1,300
+40
| +3% | +$1.33K |
|
|
BCYC
6184
CALL
Bicycle Therapeutics
BCYC
$269M
| $38K | ﹤0.01% |
1,300
+1,200
| +1,200% | +$32.2K |
|
6185
CALL
CION Investment
CION
$297M
| $38K | ﹤0.01% |
3,900
| – | – |
|
6186
PUT
CNA Financial
CNA
$14.2B
| $38K | ﹤0.01% |
900
+800
| +800% | +$32.8K |
|
6187
PUT
Vita Coco
COCO
$3.82B
| $38K | ﹤0.01% |
2,800
-3,200
| -53% | -$37.4K |
|
6188
CALL
Curis
CRIS
$9.78M
| $38K | ﹤0.01% |
176
-33
| -16% | -$9.68K |
|
6189
Denali Therapeutics
DNLI
$3.65B
| $38K | ﹤0.01% |
1,382
-2,068
| -60% | -$61.5K |
|
6190
PUT
Fate Therapeutics
FATE
$286M
| $38K | ﹤0.01% |
3,800
-2,100
| -36% | -$39.4K |
|
6191
CALL
Hancock Whitney
HWC
$6.2B
| $38K | ﹤0.01% |
800
+500
| +167% | +$25.9K |
|
6192
iShares Global Materials ETF
MXI
$338M
| $38K | ﹤0.01% |
+493
| New | +$37.7K |
|
6193
PUT
NGL Energy Partners
NGL
$2.05B
| $38K | ﹤0.01% |
31,600
+6,000
| +23% | +$7.53K |
|
6194
CALL
Northwest Natural Holdings
NWN
$2.06B
| $38K | ﹤0.01% |
800
+200
| +33% | +$9.38K |
|
|
OLO
6195
PUT
DELISTED
Olo Inc
OLO
| $38K | ﹤0.01% |
6,200
+3,300
| +114% | +$24.9K |
|
6196
PUT
Reynolds Consumer Products
REYN
$5.26B
| $38K | ﹤0.01% |
1,300
| – | – |
|
6197
Turkcell
TKC
$4.68B
| $38K | ﹤0.01% |
8,088
+1,794
| +29% | +$7.04K |
|
6198
10x Genomics
TXG
$6B
| $38K | ﹤0.01% |
1,053
-15,852
| -94% | -$518K |
|
6199
PUT
Village Farms International
VFF
$234M
| $38K | ﹤0.01% |
28,400
+4,300
| +18% | +$8.18K |
|
6200
VeriSign
VRSN
$26.2B
| $38K | ﹤0.01% |
+186
| New | +$35.7K |
|
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.