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 | |
|---|---|---|---|---|---|---|
3651
DocGo
DCGO
$62.4M
| $321K | ﹤0.01% |
+45,429
| New | +$381K |
|
3652
CALL
Idaho Strategic Resources
IDR
$456M
| $321K | ﹤0.01% |
+56,400
| New | +$316K |
|
|
CALY
3653
PUT
Callaway Golf Company
CALY
$3.28B
| $321K | ﹤0.01% |
16,300
-23,800
| -59% | -$469K |
|
|
SCPL
3654
PUT
DELISTED
SciPlay Corporation Class A Common Stock
SCPL
| $321K | ﹤0.01% |
20,000
+17,600
| +733% | +$255K |
|
|
ALEX
3655
PUT
DELISTED
Alexander & Baldwin
ALEX
| $320K | ﹤0.01% |
17,100
+2,700
| +19% | +$51.1K |
|
3656
Ituran Location and Control
ITRN
$1.08B
| $320K | ﹤0.01% |
15,149
+5,769
| +62% | +$132K |
|
3657
CALL
Brown & Brown
BRO
$25B
| $319K | ﹤0.01% |
5,600
+300
| +6% | +$17.5K |
|
3658
PUT
Howmet Aerospace
HWM
$114B
| $319K | ﹤0.01% |
8,100
-800
| -9% | -$29.2K |
|
3659
Pilgrim's Pride
PPC
$7.09B
| $319K | ﹤0.01% |
+13,458
| New | +$321K |
|
3660
PUT
Western Union
WU
$2.58B
| $319K | ﹤0.01% |
23,200
-39,100
| -63% | -$540K |
|
3661
CALL
Cytek Biosciences
CTKB
$576M
| $318K | ﹤0.01% |
31,200
-4,600
| -13% | -$61.8K |
|
3662
CALL
GoodRx Holdings
GDRX
$1.06B
| $318K | ﹤0.01% |
68,300
-67,100
| -50% | -$331K |
|
3663
CALL
Sunoco
SUN
$14.4B
| $318K | ﹤0.01% |
7,400
-74,700
| -91% | -$3.15M |
|
|
MMAT
3664
PUT
DELISTED
Meta Materials Inc. Common Stock
MMAT
| $318K | ﹤0.01% |
2,680
+2,106
| +367% | +$278K |
|
3665
CALL
Thryv Holdings
THRY
$184M
| $317K | ﹤0.01% |
16,700
+3,800
| +29% | +$74.1K |
|
|
TCRR
3666
CALL
DELISTED
TCR2 Therapeutics Inc. Common Stock
TCRR
| $317K | ﹤0.01% |
318,200
-61,000
| -16% | -$82.2K |
|
3667
dLocal
DLO
$4.38B
| $316K | ﹤0.01% |
20,324
-132,134
| -87% | -$2.32M |
|
3668
CALL
Keros Therapeutics
KROS
$199M
| $316K | ﹤0.01% |
6,600
-500
| -7% | -$23.4K |
|
|
GLOP
3669
CALL
DELISTED
GASLOG PARTNERS LP
GLOP
| $316K | ﹤0.01% |
47,500
+21,900
| +86% | +$161K |
|
|
AAWW
3670
DELISTED
Atlas Air Worldwide Holdings, Inc.
AAWW
| $316K | ﹤0.01% |
3,142
+1,155
| +58% | +$116K |
|
|
API
3671
Agora
API
$333M
| $315K | ﹤0.01% |
80,675
+17,723
| +28% | +$58.5K |
|
3672
PUT
IonQ
IONQ
$12.6B
| $315K | ﹤0.01% |
91,500
-34,100
| -27% | -$165K |
|
3673
TORM
TRMD
$3.05B
| $315K | ﹤0.01% |
10,804
+3,699
| +52% | +$99.7K |
|
|
AMRS
3674
PUT
DELISTED
Amyris Inc.
AMRS
| $315K | ﹤0.01% |
206,100
-224,700
| -52% | -$502K |
|
3675
CALL
Pacific Biosciences
PACB
$432M
| $314K | ﹤0.01% |
38,400
-79,300
| -67% | -$683K |
|
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.