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 |
Pfizer
PFE
|
+$89.5M |
| 2 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$85.5M |
| 3 |
Boeing
BA
|
+$71M |
| 4 |
Intel
INTC
|
+$60.7M |
| 5 |
Meta Platforms (Facebook)
META
|
+$48.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$104M |
| 3 |
Alibaba
BABA
|
+$82.8M |
| 4 |
Walt Disney
DIS
|
+$68.5M |
| 5 |
Citigroup
C
|
+$59.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.38% |
| 2 | Healthcare | 0.27% |
| 3 | Consumer Discretionary | 0.25% |
| 4 | Industrials | 0.17% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
TUP
4476
PUT
DELISTED
Tupperware Brands Corporation
TUP
| $282K | ﹤0.01% |
210,600
-29,900
| -12% | -$47.7K |
|
4477
PUT
Colliers International
CIGI
$5.17B
| $281K | ﹤0.01% |
2,300
+2,100
| +1,050% | +$249K |
|
4478
YieldMax COIN Option Income Strategy ETF
CONY
$344M
| $281K | ﹤0.01% |
+951
| New | +$223K |
|
4479
PUT
Fox Factory Holding Corp
FOXF
$794M
| $281K | ﹤0.01% |
5,400
+3,500
| +184% | +$206K |
|
4480
PIMCO 15+ Year US TIPS Index Exchange-Traded Fund
LTPZ
$693M
| $280K | ﹤0.01% |
5,057
-3,501
| -41% | -$194K |
|
4481
Methanex
MEOH
$4.23B
| $280K | ﹤0.01% |
6,289
-4,825
| -43% | -$215K |
|
|
RNAM
4482
DELISTED
Avidity Biosciences
RNAM
| $280K | ﹤0.01% |
+11,006
| New | +$172K |
|
4483
CALL
World Kinect Corp
WKC
$2.06B
| $280K | ﹤0.01% |
10,600
+6,400
| +152% | +$152K |
|
4484
PUT
Denison Mines
DNN
$2.43B
| $279K | ﹤0.01% |
143,200
+54,500
| +61% | +$103K |
|
4485
PUT
MarineMax
HZO
$748M
| $279K | ﹤0.01% |
8,400
+3,000
| +56% | +$96.1K |
|
4486
CALL
Immersion
IMMR
$243M
| $279K | ﹤0.01% |
37,300
+26,400
| +242% | +$188K |
|
4487
Viper Energy
VNOM
$8.43B
| $279K | ﹤0.01% |
+7,257
| New | +$245K |
|
4488
PUT
Brookdale Senior Living
BKD
$3.55B
| $278K | ﹤0.01% |
42,100
-4,400
| -9% | -$25.7K |
|
4489
Enovis
ENOV
$1.74B
| $277K | ﹤0.01% |
+4,451
| New | +$266K |
|
4490
MKS Inc
MKSI
$17.4B
| $277K | ﹤0.01% |
+2,085
| New | +$242K |
|
|
OLPX
4491
DELISTED
Olaplex Holdings
OLPX
| $277K | ﹤0.01% |
144,360
+111,887
| +345% | +$233K |
|
|
AFCG
4492
CALL
AFC Gamma
AFCG
$60.9M
| $276K | ﹤0.01% |
32,580
+22,061
| +210% | +$179K |
|
4493
PUT
Applied Industrial Technologies
AIT
$12.4B
| $276K | ﹤0.01% |
1,400
+1,300
| +1,300% | +$237K |
|
4494
CALL
FNB Corp
FNB
$6.76B
| $276K | ﹤0.01% |
19,600
+6,000
| +44% | +$80.7K |
|
4495
LSB Industries
LXU
$824M
| $276K | ﹤0.01% |
31,513
+14,443
| +85% | +$114K |
|
4496
MACOM Technology Solutions
MTSI
$17.4B
| $276K | ﹤0.01% |
2,896
+1,184
| +69% | +$105K |
|
4497
Syndax Pharmaceuticals
SNDX
$1.7B
| $276K | ﹤0.01% |
11,629
-52,401
| -82% | -$1.17M |
|
4498
SouthState Bank Corp
SSB
$10.3B
| $276K | ﹤0.01% |
+3,246
| New | +$267K |
|
4499
CALL
Federal Realty Investment Trust
FRT
$10.9B
| $275K | ﹤0.01% |
2,700
-7,000
| -72% | -$708K |
|
4500
Genco Shipping & Trading
GNK
$1.1B
| $274K | ﹤0.01% |
+13,526
| New | +$250K |
|
Similar funds
Simplex Trading's Q1 2024 Portfolio in Review
As of Q1 2024, Simplex Trading held 10,366 positions worth $173B, up 11% from $156B the previous quarter. Its ten largest holdings account for 47% of the portfolio.
Simplex Trading's Q1 2024 filing shows 1,549 new, 3,675 increased, 3,484 reduced and 1,506 closed positions. Its largest new stake was Boeing: 345,653 shares worth $66.7M. The largest sale was NVIDIA, an estimated $117M.
By sector, the portfolio is most concentrated in Technology at 0.38% of assets, up from 0.33% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2024 buy was Boeing: 345,653 shares worth $66.7M.
- Simplex Trading added most to Pfizer in Q1 2024, an estimated $89.5M increase.
- Simplex Trading's biggest Q1 2024 reduction was NVIDIA, cutting an estimated $117M.
- Simplex Trading fully exited Citigroup in Q1 2024, selling an estimated $59.8M.
- Simplex Trading's ten largest holdings make up 47% of its $173B portfolio in Q1 2024.
- Simplex Trading opened 1,549 new positions and closed 1,506 in Q1 2024.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $173B.
Based on Simplex Trading's 13F filing for Q1 2024, filed 25 Apr 2024.