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 | |
|---|---|---|---|---|---|---|
1626
CALL
United Natural Foods
UNFI
$3.01B
| $2.73M | ﹤0.01% |
70,600
+50,400
| +250% | +$2.09M |
|
|
DQ
1627
PUT
Daqo New Energy
DQ
$790M
| $2.73M | ﹤0.01% |
70,700
-23,900
| -25% | -$1.17M |
|
1628
CALL
Yeti Holdings
YETI
$3.82B
| $2.73M | ﹤0.01% |
66,000
+8,000
| +14% | +$300K |
|
1629
PUT
Baker Hughes
BKR
$56.8B
| $2.73M | ﹤0.01% |
92,300
-33,900
| -27% | -$935K |
|
1630
CALL
Navios Maritime Partners
NMM
$2.25B
| $2.73M | ﹤0.01% |
105,000
+53,100
| +102% | +$1.35M |
|
1631
BILL Holdings
BILL
$4.33B
| $2.72M | ﹤0.01% |
25,001
+20,230
| +424% | +$2.43M |
|
1632
CALL
Lemonade
LMND
$4.62B
| $2.72M | ﹤0.01% |
198,900
+28,000
| +16% | +$554K |
|
1633
PUT
PennyMac Financial
PFSI
$4.38B
| $2.72M | ﹤0.01% |
48,000
-100,900
| -68% | -$5.34M |
|
1634
CALL
ATI
ATI
$27B
| $2.72M | ﹤0.01% |
91,000
+47,000
| +107% | +$1.38M |
|
1635
PUT
Constellation Energy
CEG
$98B
| $2.71M | ﹤0.01% |
31,500
-43,300
| -58% | -$3.9M |
|
1636
CALL
Stem
STEM
$49.2M
| $2.71M | ﹤0.01% |
15,185
-3,855
| -20% | -$926K |
|
1637
PUT
Corning
GLW
$126B
| $2.71M | ﹤0.01% |
84,800
+37,900
| +81% | +$1.23M |
|
1638
PUT
STAAR Surgical
STAA
$1.16B
| $2.71M | ﹤0.01% |
55,800
+46,600
| +507% | +$2.92M |
|
1639
PUT
TransDigm Group
TDG
$69.2B
| $2.71M | ﹤0.01% |
4,300
-11,300
| -72% | -$6.66M |
|
1640
PUT
Toast
TOST
$16.8B
| $2.7M | ﹤0.01% |
149,900
+73,600
| +96% | +$1.38M |
|
1641
CALL
CBRE Group
CBRE
$40.8B
| $2.7M | ﹤0.01% |
35,100
-20,100
| -36% | -$1.48M |
|
1642
CALL
BioCryst Pharmaceuticals
BCRX
$2.37B
| $2.7M | ﹤0.01% |
235,000
-153,700
| -40% | -$1.92M |
|
|
DENT
1643
PUT
DELISTED
AdvisorShares Dent Tactical ETF
DENT
| $2.7M | ﹤0.01% |
362,600
+204,000
| +129% | +$1.52M |
|
1644
CALL
Incyte
INCY
$23.5B
| $2.69M | ﹤0.01% |
33,500
+4,300
| +15% | +$329K |
|
|
AUY
1645
PUT
DELISTED
Yamana Gold, Inc.
AUY
| $2.69M | ﹤0.01% |
484,700
-83,100
| -15% | -$420K |
|
1646
British American Tobacco
BTI
$132B
| $2.69M | ﹤0.01% |
67,223
-212,410
| -76% | -$8.35M |
|
1647
PUT
Westlake Corp
WLK
$9.46B
| $2.69M | ﹤0.01% |
26,200
-8,500
| -24% | -$856K |
|
1648
PUT
Virtu Financial
VIRT
$5.2B
| $2.68M | ﹤0.01% |
131,300
+63,600
| +94% | +$1.38M |
|
1649
PUT
Insulet
PODD
$11.3B
| $2.68M | ﹤0.01% |
9,100
+500
| +6% | +$138K |
|
1650
McKesson
MCK
$98.5B
| $2.67M | ﹤0.01% |
+7,116
| New | +$2.65M |
|
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.