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 | |
|---|---|---|---|---|---|---|
3401
Regency Centers
REG
$14.9B
| $513K | ﹤0.01% |
8,656
+5,903
| +214% | +$391K |
|
|
SILK
3402
PUT
DELISTED
Silk Road Medical, Inc. Common Stock
SILK
| $513K | ﹤0.01% |
14,100
+12,500
| +781% | +$454K |
|
|
MYOV
3403
CALL
DELISTED
Myovant Sciences Ltd.
MYOV
| $513K | ﹤0.01% |
41,300
+30,800
| +293% | +$340K |
|
3404
PUT
Penske Automotive Group
PAG
$14.6B
| $512K | ﹤0.01% |
4,900
+2,300
| +88% | +$247K |
|
3405
SIGA Technologies
SIGA
$242M
| $512K | ﹤0.01% |
44,291
+30,610
| +224% | +$276K |
|
3406
Tractor Supply
TSCO
$16.3B
| $512K | ﹤0.01% |
13,230
+12,190
| +1,172% | +$496K |
|
3407
PUT
Energy Vault
NRGV
$473M
| $511K | ﹤0.01% |
51,000
+9,400
| +23% | +$122K |
|
3408
Napco Security Technologies
NSSC
$1.29B
| $511K | ﹤0.01% |
24,821
+24,575
| +9,990% | +$462K |
|
3409
Opendoor
OPEN
$3.69B
| $511K | ﹤0.01% |
112,193
-307,249
| -73% | -$2.02M |
|
3410
CALL
Revvity
RVTY
$12.4B
| $511K | ﹤0.01% |
3,600
-1,100
| -23% | -$165K |
|
3411
iShares US Healthcare ETF
IYH
$3.47B
| $510K | ﹤0.01% |
+9,500
| New | +$522K |
|
3412
CALL
Katapult Holdings
KPLT
$31.4M
| $510K | ﹤0.01% |
19,068
+2,596
| +16% | +$103K |
|
3413
PUT
Blue Owl Capital
OBDC
$5.45B
| $510K | ﹤0.01% |
41,400
+40,400
| +4,040% | +$554K |
|
|
MGI
3414
PUT
DELISTED
MoneyGram International, Inc. New
MGI
| $510K | ﹤0.01% |
51,000
-161,900
| -76% | -$1.63M |
|
|
DIDI
3415
DELISTED
DiDi Global Inc. American depositary shares, each four representing one Class A ordinary share
DIDI
| $510K | ﹤0.01% |
172,900
-35,296
| -17% | -$70K |
|
3416
Cboe Global Markets
CBOE
$31.6B
| $509K | ﹤0.01% |
+4,505
| New | +$506K |
|
3417
PUT
Rambus
RMBS
$9.4B
| $509K | ﹤0.01% |
23,700
+16,300
| +220% | +$403K |
|
3418
CALL
EnerSys
ENS
$6.56B
| $507K | ﹤0.01% |
8,600
+8,000
| +1,333% | +$527K |
|
3419
Navios Maritime Partners
NMM
$2.21B
| $507K | ﹤0.01% |
22,074
+13,716
| +164% | +$400K |
|
|
ATCO
3420
PUT
DELISTED
Atlas Corp.
ATCO
| $507K | ﹤0.01% |
47,400
-36,700
| -44% | -$461K |
|
|
NTUS
3421
PUT
DELISTED
Natus Medical Inc
NTUS
| $507K | ﹤0.01% |
15,500
+15,100
| +3,775% | +$477K |
|
3422
CALL
Genco Shipping & Trading
GNK
$1.09B
| $506K | ﹤0.01% |
26,200
+5,500
| +27% | +$124K |
|
3423
Elastic
ESTC
$6.59B
| $505K | ﹤0.01% |
7,473
-21,809
| -74% | -$1.59M |
|
3424
Huazhu Hotels Group
HTHT
$13.3B
| $505K | ﹤0.01% |
13,255
-45,930
| -78% | -$1.44M |
|
3425
Wayfair
W
$11.7B
| $505K | ﹤0.01% |
11,611
-6,389
| -35% | -$449K |
|
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.