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 | |
|---|---|---|---|---|---|---|
3026
Toast
TOST
$17.9B
| $1.1M | ﹤0.01% |
43,988
+25,365
| +136% | +$525K |
|
3027
PUT
Uranium Energy
UEC
$4.9B
| $1.09M | ﹤0.01% |
162,300
-157,000
| -49% | -$1.11M |
|
3028
PUT
Pilgrim's Pride
PPC
$6.94B
| $1.09M | ﹤0.01% |
31,900
+26,500
| +491% | +$795K |
|
3029
Republic Services
RSG
$66.7B
| $1.09M | ﹤0.01% |
+5,718
| New | +$1.01M |
|
3030
PUT
STAAR Surgical
STAA
$1.14B
| $1.09M | ﹤0.01% |
28,600
+17,700
| +162% | +$575K |
|
|
SQSP
3031
CALL
DELISTED
Squarespace, Inc.
SQSP
| $1.09M | ﹤0.01% |
30,000
+21,600
| +257% | +$702K |
|
3032
CALL
Tecnoglass
TGLS
$2.01B
| $1.09M | ﹤0.01% |
21,000
-21,300
| -50% | -$980K |
|
|
BERY
3033
DELISTED
Berry Global Group, Inc.
BERY
| $1.09M | ﹤0.01% |
+19,668
| New | +$1.12M |
|
3034
Knight Transportation
KNX
$11.5B
| $1.09M | ﹤0.01% |
+19,836
| New | +$1.12M |
|
3035
PUT
Oshkosh
OSK
$9.66B
| $1.08M | ﹤0.01% |
8,700
+7,700
| +770% | +$858K |
|
3036
PUT
Manitowoc
MTW
$523M
| $1.08M | ﹤0.01% |
76,600
+76,500
| +76,500% | +$1.13M |
|
|
LNW
3037
CALL
DELISTED
Light & Wonder
LNW
| $1.08M | ﹤0.01% |
10,600
-9,700
| -48% | -$876K |
|
3038
CALL
Amylyx Pharmaceuticals
AMLX
$2.17B
| $1.08M | ﹤0.01% |
380,300
+291,700
| +329% | +$3.82M |
|
3039
PUT
Clearwater Paper
CLW
$278M
| $1.08M | ﹤0.01% |
24,700
+20,800
| +533% | +$767K |
|
3040
PUT
F5
FFIV
$23B
| $1.08M | ﹤0.01% |
5,700
-11,800
| -67% | -$2.18M |
|
3041
CALL
Aurinia Pharmaceuticals
AUPH
$1.96B
| $1.08M | ﹤0.01% |
215,500
-138,000
| -39% | -$936K |
|
3042
CALL
CBRE Group
CBRE
$42.1B
| $1.08M | ﹤0.01% |
11,100
-12,400
| -53% | -$1.11M |
|
3043
PUT
Evercore
EVR
$13.2B
| $1.08M | ﹤0.01% |
5,600
+1,400
| +33% | +$253K |
|
3044
CALL
Biohaven
BHVN
$2.18B
| $1.08M | ﹤0.01% |
19,700
+16,900
| +604% | +$837K |
|
3045
CALL
Simplify US Equity PLUS Convexity ETF
SPYC
$111M
| $1.08M | ﹤0.01% |
47,200
+40,100
| +565% | +$1.31M |
|
3046
Alexandria Real Estate Equities
ARE
$8.96B
| $1.07M | ﹤0.01% |
8,341
-6,332
| -43% | -$780K |
|
3047
CALL
Avantor
AVTR
$8.03B
| $1.07M | ﹤0.01% |
42,000
-33,500
| -44% | -$797K |
|
3048
Avery Dennison
AVY
$12.5B
| $1.07M | ﹤0.01% |
4,807
+3,694
| +332% | +$766K |
|
3049
CALL
Madison Square Garden
MSGS
$9.57B
| $1.07M | ﹤0.01% |
5,800
-200
| -3% | -$37.2K |
|
3050
PUT
QuidelOrtho
QDEL
$1.15B
| $1.07M | ﹤0.01% |
22,300
-3,900
| -15% | -$227K |
|
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.