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 | |
|---|---|---|---|---|---|---|
|
SBOW
2701
PUT
DELISTED
SilverBow Resources, Inc.
SBOW
| $789K | ﹤0.01% |
27,900
+8,900
| +47% | +$282K |
|
2702
PUT
Bain Capital Specialty
BCSF
$802M
| $787K | ﹤0.01% |
66,200
+4,000
| +6% | +$50.9K |
|
2703
PUT
Thomson Reuters
TRI
$39.4B
| $787K | ﹤0.01% |
6,549
+3,892
| +146% | +$449K |
|
2704
G-III Apparel Group
GIII
$1.47B
| $786K | ﹤0.01% |
57,387
+30,612
| +114% | +$515K |
|
2705
CALL
Jackson Financial
JXN
$8.32B
| $786K | ﹤0.01% |
22,600
+5,800
| +35% | +$202K |
|
2706
CALL
LiveRamp
RAMP
$2.29B
| $785K | ﹤0.01% |
33,500
+29,500
| +738% | +$596K |
|
2707
Public Service Enterprise Group
PEG
$39.8B
| $784K | ﹤0.01% |
+12,799
| New | +$743K |
|
2708
Radware
RDWR
$1.24B
| $784K | ﹤0.01% |
39,699
+18,784
| +90% | +$393K |
|
2709
PUT
Carrier Global
CARR
$57.2B
| $783K | ﹤0.01% |
19,000
+3,100
| +19% | +$126K |
|
2710
PUT
Atkore
ATKR
$2.59B
| $782K | ﹤0.01% |
6,900
+1,400
| +25% | +$147K |
|
2711
CALL
Vaalco Energy
EGY
$594M
| $782K | ﹤0.01% |
171,500
+72,300
| +73% | +$363K |
|
2712
CALL
AMN Healthcare
AMN
$1.28B
| $781K | ﹤0.01% |
7,600
-7,300
| -49% | -$841K |
|
2713
PUT
CNX Resources
CNX
$4.85B
| $781K | ﹤0.01% |
46,400
-20,200
| -30% | -$349K |
|
|
SWAV
2714
PUT
DELISTED
Shockwave Medical, Inc. Common Stock
SWAV
| $781K | ﹤0.01% |
3,800
-14,100
| -79% | -$3.57M |
|
2715
PUT
Grab
GRAB
$13.5B
| $780K | ﹤0.01% |
242,300
+17,000
| +8% | +$48.7K |
|
2716
CALL
Magna International
MGA
$17.9B
| $780K | ﹤0.01% |
13,900
-9,900
| -42% | -$556K |
|
2717
CALL
Philips
PHG
$25.4B
| $779K | ﹤0.01% |
60,729
-276,552
| -82% | -$3.34M |
|
|
GOEV
2718
CALL
DELISTED
Canoo Inc. Class A Common Stock
GOEV
| $779K | ﹤0.01% |
1,377
+244
| +22% | +$150K |
|
|
ATXS
2719
DELISTED
Astria Therapeutics
ATXS
| $778K | ﹤0.01% |
+52,310
| New | +$539K |
|
2720
JB Hunt Transport Services
JBHT
$27.1B
| $776K | ﹤0.01% |
4,452
-1,778
| -29% | -$310K |
|
|
ONC
2721
BeOne Medicines Ltd
ONC
$33.8B
| $776K | ﹤0.01% |
+3,530
| New | +$647K |
|
2722
FIVE9
FIVN
$1.77B
| $773K | ﹤0.01% |
11,397
+8,046
| +240% | +$505K |
|
|
BPMC
2723
CALL
DELISTED
Blueprint Medicines
BPMC
| $771K | ﹤0.01% |
17,600
-14,400
| -45% | -$691K |
|
2724
Illumina
ILMN
$29.4B
| $770K | ﹤0.01% |
3,920
-31,677
| -89% | -$6.56M |
|
2725
CALL
Element Solutions
ESI
$9.12B
| $769K | ﹤0.01% |
42,300
-6,900
| -14% | -$124K |
|
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.