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 |
Walmart Inc
WMT
|
+$43.6M |
| 2 |
Apple
AAPL
|
+$40.9M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$37.7M |
| 4 |
Citigroup
C
|
+$34.2M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$32.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$189M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$123M |
| 3 |
NVIDIA
NVDA
|
+$115M |
| 4 |
Tesla
TSLA
|
+$52M |
| 5 |
Meta Platforms (Facebook)
META
|
+$49M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.42% |
| 2 | Consumer Discretionary | 0.2% |
| 3 | Healthcare | 0.17% |
| 4 | Industrials | 0.15% |
| 5 | Communication Services | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2676
Helmerich & Payne
HP
$3.53B
| $911K | ﹤0.01% |
+25,487
| New | +$1.1M |
|
2677
PUT
Teleflex
TFX
$5.85B
| $911K | ﹤0.01% |
3,600
-500
| -12% | -$121K |
|
2678
CALL
AerCap
AER
$23.9B
| $910K | ﹤0.01% |
16,200
-15,400
| -49% | -$921K |
|
2679
CALL
Sprott Uranium Miners ETF
URNM
$1.78B
| $909K | ﹤0.01% |
29,000
-48,900
| -63% | -$1.64M |
|
|
BERY
2680
CALL
DELISTED
Berry Global Group, Inc.
BERY
| $907K | ﹤0.01% |
16,771
+9,584
| +133% | +$531K |
|
2681
CALL
Costamare
CMRE
$1.9B
| $906K | ﹤0.01% |
96,300
-92,400
| -49% | -$911K |
|
|
PLL
2682
CALL
DELISTED
Piedmont Lithium
PLL
| $906K | ﹤0.01% |
15,100
+5,700
| +61% | +$346K |
|
2683
Emcor
EME
$33.1B
| $903K | ﹤0.01% |
5,558
+3,813
| +219% | +$586K |
|
2684
Franco-Nevada
FNV
$41.4B
| $902K | ﹤0.01% |
+6,188
| New | +$863K |
|
2685
PUT
PubMatic
PUBM
$581M
| $902K | ﹤0.01% |
65,300
-10,600
| -14% | -$153K |
|
|
GPP
2686
CALL
DELISTED
Green Plains Partners LP
GPP
| $902K | ﹤0.01% |
71,100
-27,800
| -28% | -$360K |
|
2687
Arista Networks
ANET
$219B
| $897K | ﹤0.01% |
+21,388
| New | +$735K |
|
2688
PUT
Frontline
FRO
$8.75B
| $897K | ﹤0.01% |
54,200
-557,600
| -91% | -$8.78M |
|
2689
PUT
SM Energy
SM
$7.96B
| $895K | ﹤0.01% |
31,800
+700
| +2% | +$21.4K |
|
|
ENLC
2690
CALL
DELISTED
ENLINK MIDSTREAM, LLC
ENLC
| $895K | ﹤0.01% |
82,600
+41,100
| +99% | +$487K |
|
|
BLUE
2691
DELISTED
bluebird bio
BLUE
| $894K | ﹤0.01% |
14,070
+7,285
| +107% | +$832K |
|
|
RADI
2692
PUT
DELISTED
Radius Global Infrastructure, Inc. Class A Common Stock
RADI
| $894K | ﹤0.01% |
61,000
+30,800
| +102% | +$418K |
|
2693
CALL
OneMain Financial
OMF
$6.9B
| $893K | ﹤0.01% |
24,100
-38,000
| -61% | -$1.53M |
|
2694
PUT
Exelixis
EXEL
$13.9B
| $892K | ﹤0.01% |
46,000
-71,800
| -61% | -$1.25M |
|
|
EDR
2695
PUT
DELISTED
Endeavor Group Holdings, Inc.
EDR
| $892K | ﹤0.01% |
37,300
+35,400
| +1,863% | +$789K |
|
2696
CALL
Hormel Foods
HRL
$13.9B
| $889K | ﹤0.01% |
22,300
-65,700
| -75% | -$2.84M |
|
2697
CALL
ADMA Biologics
ADMA
$1.92B
| $888K | ﹤0.01% |
268,500
-73,100
| -21% | -$253K |
|
2698
CALL
Vipshop
VIPS
$6.84B
| $886K | ﹤0.01% |
58,400
-116,800
| -67% | -$1.74M |
|
2699
PUT
Viking Therapeutics
VKTX
$4.04B
| $885K | ﹤0.01% |
53,200
-35,600
| -40% | -$368K |
|
2700
CALL
AllianceBernstein
AB
$3.47B
| $884K | ﹤0.01% |
24,200
-400
| -2% | -$15.1K |
|
Similar funds
Simplex Trading's Q1 2023 Portfolio in Review
As of Q1 2023, Simplex Trading held 10,803 positions worth $114B, up 24% from $91.9B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading deployed $10.1B of net new capital in Q1 2023, opening 1,536 new positions and adding to 3,665 existing holdings. Its largest new stake was Walmart Inc: 918,957 shares worth $45.2M.
By sector, the portfolio is most concentrated in Technology at 0.42% of assets, up from 0.35% a quarter earlier, followed by Consumer Discretionary and Healthcare.
On the sell side, the largest reduction was Meta Platforms (Facebook), an estimated $49M trimmed.
- Simplex Trading's largest Q1 2023 buy was Walmart Inc: 918,957 shares worth $45.2M.
- Simplex Trading added most to Apple in Q1 2023, an estimated $40.9M increase.
- Simplex Trading's biggest Q1 2023 reduction was Meta Platforms (Facebook), cutting an estimated $49M.
- Simplex Trading fully exited Amazon in Q1 2023, selling an estimated $189M.
- Simplex Trading's ten largest holdings make up 38% of its $114B portfolio in Q1 2023.
- Simplex Trading opened 1,536 new positions and closed 1,729 in Q1 2023.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $114B.
Based on Simplex Trading's 13F filing for Q1 2023, filed 27 Apr 2023.