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 | |
|---|---|---|---|---|---|---|
5026
TORM
TRMD
$3.09B
| $144K | ﹤0.01% |
+7,105
| New | +$128K |
|
|
ARVL
5027
PUT
DELISTED
Arrival Ordinary Shares
ARVL
| $144K | ﹤0.01% |
3,590
+1,118
| +45% | +$73.6K |
|
5028
CALL
BlackLine
BL
$1.92B
| $143K | ﹤0.01% |
2,400
-99,300
| -98% | -$6.66M |
|
5029
CALL
Fate Therapeutics
FATE
$291M
| $143K | ﹤0.01% |
6,400
+3,000
| +88% | +$86.7K |
|
|
HITI
5030
CALL
High Tide
HITI
$189M
| $143K | ﹤0.01% |
102,600
+98,900
| +2,673% | +$156K |
|
|
HPP
5031
Hudson Pacific Properties
HPP
$786M
| $143K | ﹤0.01% |
1,870
+242
| +15% | +$23.5K |
|
|
SGMO
5032
CALL
DELISTED
SANGAMO THERAPEUTICS INC
SGMO
| $143K | ﹤0.01% |
29,300
-12,000
| -29% | -$61.6K |
|
5033
Sportradar
SRAD
$3.65B
| $143K | ﹤0.01% |
16,324
+12,257
| +301% | +$122K |
|
|
CCV
5034
CALL
DELISTED
Churchill Capital Corp V
CCV
| $143K | ﹤0.01% |
14,500
+2,600
| +22% | +$25.7K |
|
|
LUNA
5035
CALL
DELISTED
Luna Innovations Incorporated
LUNA
| $143K | ﹤0.01% |
32,300
+6,000
| +23% | +$34.3K |
|
|
INBX
5036
PUT
DELISTED
Inhibrx, Inc. Common Stock
INBX
| $143K | ﹤0.01% |
8,000
+7,900
| +7,900% | +$142K |
|
|
ALEX
5037
DELISTED
Alexander & Baldwin
ALEX
| $142K | ﹤0.01% |
8,614
+6,557
| +319% | +$121K |
|
5038
PUT
Armstrong World Industries
AWI
$7.58B
| $142K | ﹤0.01% |
1,800
+1,700
| +1,700% | +$144K |
|
|
BPT
5039
PUT
DELISTED
BP Prudhoe Bay Royalty Trust
BPT
| $142K | ﹤0.01% |
11,900
-47,800
| -80% | -$774K |
|
5040
Extreme Networks
EXTR
$3.92B
| $142K | ﹤0.01% |
+10,877
| New | +$137K |
|
5041
MGM Resorts International
MGM
$11.4B
| $142K | ﹤0.01% |
4,778
-35,637
| -88% | -$1.16M |
|
5042
CALL
SBA Communications
SBAC
$19B
| $142K | ﹤0.01% |
500
+200
| +67% | +$64.9K |
|
5043
CALL
UNIFI
UFI
$119M
| $142K | ﹤0.01% |
15,000
+14,000
| +1,400% | +$174K |
|
|
TEN
5044
PUT
Tsakos Energy Navigation Ltd
TEN
$1.19B
| $142K | ﹤0.01% |
9,300
-16,100
| -63% | -$225K |
|
5045
Century Communities
CCS
$1.96B
| $141K | ﹤0.01% |
+3,319
| New | +$161K |
|
5046
CALL
Cenntro
CENN
$8.46M
| $141K | ﹤0.01% |
229
+42
| +22% | +$36K |
|
5047
PUT
Chefs' Warehouse
CHEF
$4.54B
| $141K | ﹤0.01% |
4,900
+700
| +17% | +$24.5K |
|
5048
CleanSpark
CLSK
$3.76B
| $141K | ﹤0.01% |
44,529
+17,750
| +66% | +$76.8K |
|
|
CRDL
5049
CALL
Cardiol Therapeutics
CRDL
$151M
| $141K | ﹤0.01% |
137,300
+127,800
| +1,345% | +$156K |
|
5050
PUT
Geron
GERN
$821M
| $141K | ﹤0.01% |
60,600
+40,200
| +197% | +$90K |
|
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.