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 | |
|---|---|---|---|---|---|---|
5851
CALL
Advanced Drainage Systems
WMS
$10.6B
| $81K | ﹤0.01% |
900
+200
| +29% | +$20.6K |
|
|
WEJO
5852
CALL
DELISTED
Wejo Group Limited Common Shares
WEJO
| $81K | ﹤0.01% |
68,800
+44,000
| +177% | +$103K |
|
|
KEEL
5853
PUT
Keel Infrastructure Corp
KEEL
$2.4B
| $80K | ﹤0.01% |
72,200
+21,000
| +41% | +$47.6K |
|
5854
PUT
Camden Property Trust
CPT
$11B
| $80K | ﹤0.01% |
600
-700
| -54% | -$104K |
|
5855
CALL
Crinetics Pharmaceuticals
CRNX
$8.84B
| $80K | ﹤0.01% |
4,300
+4,200
| +4,200% | +$83.8K |
|
5856
PUT
Empire State Realty Trust
ESRT
$872M
| $80K | ﹤0.01% |
11,400
-12,200
| -52% | -$99.1K |
|
5857
Group 1 Automotive
GPI
$3.42B
| $80K | ﹤0.01% |
477
-1,093
| -70% | -$190K |
|
5858
PUT
Leidos
LDOS
$14.5B
| $80K | ﹤0.01% |
800
| – | – |
|
5859
PUT
Leslie's
LESL
$8.9M
| $80K | ﹤0.01% |
265
-15
| -5% | -$5.6K |
|
5860
PUT
Ligand Pharmaceuticals
LGND
$5.76B
| $80K | ﹤0.01% |
1,443
-320
| -18% | -$18.2K |
|
5861
CALL
Seres Therapeutics
MCRB
$46.8M
| $80K | ﹤0.01% |
1,175
-65
| -5% | -$5.6K |
|
5862
CALL
MeiraGTx Holdings
MGTX
$1.09B
| $80K | ﹤0.01% |
10,700
+6,000
| +128% | +$58.2K |
|
5863
Nkarta
NKTX
$150M
| $80K | ﹤0.01% |
6,561
-2,199
| -25% | -$28.9K |
|
5864
ServiceNow
NOW
$115B
| $80K | ﹤0.01% |
850
-52,800
| -98% | -$5.03M |
|
5865
CALL
NatWest
NWG
$75.4B
| $80K | ﹤0.01% |
13,743
-18,107
| -57% | -$109K |
|
5866
CALL
Replimune Group
REPL
$941M
| $80K | ﹤0.01% |
+4,600
| New | +$75.6K |
|
5867
CALL
Twist Bioscience
TWST
$5.7B
| $80K | ﹤0.01% |
2,300
-4,000
| -63% | -$142K |
|
5868
Viasat
VSAT
$10.6B
| $80K | ﹤0.01% |
2,614
-2,918
| -53% | -$113K |
|
5869
CALL
Xos
XOS
$28.8M
| $80K | ﹤0.01% |
1,460
-443
| -23% | -$35.4K |
|
|
TCS
5870
PUT
DELISTED
THE CONTAINER STORE GROUP, INC.
TCS
| $80K | ﹤0.01% |
860
-407
| -32% | -$46.2K |
|
|
CHS
5871
PUT
DELISTED
Chicos FAS, Inc.
CHS
| $80K | ﹤0.01% |
16,100
| – | – |
|
|
APEN
5872
CALL
DELISTED
Apollo Endosurgery, Inc.
APEN
| $80K | ﹤0.01% |
22,100
+14,500
| +191% | +$68.5K |
|
5873
CALL
Akebia Therapeutics
AKBA
$354M
| $79K | ﹤0.01% |
225,600
-280,800
| -55% | -$118K |
|
|
CVSA
5874
PUT
Covista Inc
CVSA
$4.25B
| $79K | ﹤0.01% |
2,200
-6,000
| -73% | -$189K |
|
5875
PUT
Cirrus Logic
CRUS
$6.53B
| $79K | ﹤0.01% |
1,100
-3,700
| -77% | -$287K |
|
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.