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 |
Apple
AAPL
|
+$286M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$82.3M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$72.6M |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$64.2M |
| 5 |
Intel
INTC
|
+$52.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$51.5M |
| 2 |
iShares Silver Trust
SLV
|
+$41.8M |
| 3 |
Ford
F
|
+$26.3M |
| 4 |
United Airlines
UAL
|
+$22.7M |
| 5 |
ExxonMobil
XOM
|
+$22.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.84% |
| 2 | Communication Services | 0.32% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.28% |
| 5 | Healthcare | 0.2% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
4476
ProShares UltraShort Dow 30
DXD
$42.6M
| $221K | ﹤0.01% |
4,236
+1,816
| +75% | +$86.6K |
|
4477
Perion Network
PERI
$377M
| $221K | ﹤0.01% |
12,199
+8,325
| +215% | +$173K |
|
|
MRTX
4478
PUT
DELISTED
Mirati Therapeutics, Inc. Common Stock
MRTX
| $221K | ﹤0.01% |
3,300
+1,100
| +50% | +$70K |
|
4479
PUT
Build-A-Bear
BBW
$442M
| $220K | ﹤0.01% |
13,400
+4,200
| +46% | +$76.7K |
|
4480
PUT
CBRE Group
CBRE
$43.8B
| $220K | ﹤0.01% |
3,000
+200
| +7% | +$16.1K |
|
|
HUYA
4481
Huya Inc
HUYA
$570M
| $220K | ﹤0.01% |
56,901
+31,643
| +125% | +$132K |
|
|
NEWP
4482
PUT
New Pacific Metals
NEWP
$881M
| $220K | ﹤0.01% |
76,700
+12,100
| +19% | +$38.6K |
|
4483
Allison Transmission
ALSN
$9.57B
| $219K | ﹤0.01% |
5,706
+1,049
| +23% | +$40.1K |
|
4484
AutoNation
AN
$7.18B
| $219K | ﹤0.01% |
1,967
-11,711
| -86% | -$1.33M |
|
4485
Bausch + Lomb
BLCO
$6.06B
| $219K | ﹤0.01% |
+14,408
| New | +$233K |
|
|
SOHU
4486
Sohu.com
SOHU
$359M
| $219K | ﹤0.01% |
13,263
-8,779
| -40% | -$137K |
|
|
ASTR
4487
PUT
DELISTED
Astra Space, Inc. Class A Common Stock
ASTR
| $219K | ﹤0.01% |
11,240
+9,593
| +582% | +$391K |
|
|
AJRD
4488
PUT
DELISTED
Aerojet Rocketdyne Holdings
AJRD
| $219K | ﹤0.01% |
5,400
+2,900
| +116% | +$117K |
|
|
INN
4489
CALL
Summit Hotel Properties
INN
$748M
| $218K | ﹤0.01% |
30,100
-9,900
| -25% | -$87.1K |
|
4490
PUT
Newegg Commerce
NEGG
$270M
| $218K | ﹤0.01% |
2,975
-1,200
| -29% | -$126K |
|
4491
PUT
Smart Sand
SND
$179M
| $218K | ﹤0.01% |
109,200
+16,500
| +18% | +$57K |
|
|
BRG
4492
DELISTED
Bluerock Residential Growth REIT, Inc.
BRG
| $218K | ﹤0.01% |
+8,302
| New | +$219K |
|
4493
Agios Pharmaceuticals
AGIO
$1.95B
| $217K | ﹤0.01% |
+9,810
| New | +$222K |
|
4494
PUT
CNX Resources
CNX
$4.9B
| $217K | ﹤0.01% |
13,200
-5,500
| -29% | -$113K |
|
4495
CALL
Howard Hughes
HHH
$3.87B
| $217K | ﹤0.01% |
3,357
+1,154
| +52% | +$94.7K |
|
|
PPLI
4496
People Inc
PPLI
$3.08B
| $217K | ﹤0.01% |
+3,483
| New | +$246K |
|
|
KZR
4497
DELISTED
Kezar Life Sciences
KZR
| $217K | ﹤0.01% |
2,629
+2,117
| +413% | +$187K |
|
|
SLI
4498
PUT
Standard Lithium
SLI
$505M
| $217K | ﹤0.01% |
51,200
-14,300
| -22% | -$84.6K |
|
4499
PUT
Atossa Therapeutics
ATOS
$21.8M
| $216K | ﹤0.01% |
13,233
-2,967
| -18% | -$46.7K |
|
4500
iShares Core S&P Total US Stock Market ETF
ITOT
$93.8B
| $216K | ﹤0.01% |
+2,589
| New | +$236K |
|
Similar funds
Simplex Trading's Q2 2022 Portfolio in Review
As of Q2 2022, Simplex Trading held 11,810 positions worth $94.1B, down 14% from $109B the previous quarter. Its ten largest holdings account for 40% of the portfolio.
Simplex Trading deployed $11.3B of net new capital in Q2 2022, opening 1,405 new positions and adding to 4,027 existing holdings. Its largest new stake was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
By sector, the portfolio is most concentrated in Technology at 0.84% of assets, up from 0.67% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was United Airlines, an estimated $22.7M trimmed.
- Simplex Trading's largest Q2 2022 buy was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
- Simplex Trading added most to Apple in Q2 2022, an estimated $286M increase.
- Simplex Trading's biggest Q2 2022 reduction was United Airlines, cutting an estimated $22.7M.
- Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2022, selling an estimated $51.5M.
- Simplex Trading's ten largest holdings make up 40% of its $94.1B portfolio in Q2 2022.
- Simplex Trading opened 1,405 new positions and closed 1,792 in Q2 2022.
- Simplex Trading's portfolio value fell 14% quarter-over-quarter to $94.1B.
Based on Simplex Trading's 13F filing for Q2 2022, filed 3 Aug 2022.