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 |
NVIDIA
NVDA
|
+$29.6M |
| 2 |
State Street Industrial Select Sector SPDR ETF
XLI
|
+$22.6M |
| 3 |
iShares Russell 2000 ETF
IWM
|
+$17.9M |
| 4 |
Netflix
NFLX
|
+$17.1M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$13.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$123M |
| 2 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$40.6M |
| 3 |
Walt Disney
DIS
|
+$25.6M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$13.5M |
| 5 |
Johnson & Johnson
JNJ
|
+$11.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.5% |
| 2 | Communication Services | 0.5% |
| 3 | Healthcare | 0.35% |
| 4 | Industrials | 0.3% |
| 5 | Consumer Discretionary | 0.26% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
176
PUT
United Parcel Service
UPS
$98.9B
| $27.4M | 0.07% |
2,657
+1,087
| +69% | +$113K |
|
177
CALL
Shopify
SHOP
$160B
| $27.4M | 0.07% |
9,140
+1,850
| +25% | +$48.2K |
|
178
PUT
Cisco
CSCO
$442B
| $27.4M | 0.07% |
5,010
-473
| -9% | -$26.1K |
|
179
PUT
Pfizer
PFE
$142B
| $27.3M | 0.07% |
6,648
+1,080
| +19% | +$42.9K |
|
180
CALL
AT&T
T
$155B
| $27.3M | 0.07% |
10,776
-6,510
| -38% | -$156K |
|
181
PUT
Medtronic
MDT
$107B
| $27M | 0.07% |
2,769
+530
| +24% | +$48.4K |
|
182
PUT
United Airlines
UAL
$38.2B
| $26.9M | 0.07% |
3,068
+97
| +3% | +$8.21K |
|
|
UWC
183
CALL
DELISTED
PROSHARES TR ULTRA RUSSELL3000
UWC
| $26.8M | 0.07% |
4,704
+1,709
| +57% | +$9.75M |
|
184
PUT
Blackrock
BLK
$161B
| $26.6M | 0.07% |
566
+71
| +14% | +$32.1K |
|
185
PUT
NXP Semiconductors
NXPI
$69B
| $26.5M | 0.07% |
2,714
+2,023
| +293% | +$196K |
|
186
PUT
Gilead Sciences
GILD
$162B
| $26M | 0.07% |
3,851
+1,188
| +45% | +$78.2K |
|
187
CALL
Proshares UltraShort Technology
REW
$3.27M
| $25.8M | 0.07% |
+114
| New | +$138K |
|
188
CALL
Honeywell
HON
$72.8B
| $25.6M | 0.07% |
1,567
+795
| +103% | +$127K |
|
|
TIF
189
PUT
DELISTED
Tiffany & Co.
TIF
| $24.8M | 0.07% |
2,652
-1,335
| -33% | -$133K |
|
190
CALL
Lam Research
LRCX
$403B
| $24.8M | 0.07% |
13,180
+4,460
| +51% | +$84.6K |
|
191
PUT
Amgen
AMGN
$198B
| $24.7M | 0.07% |
1,343
-1,846
| -58% | -$331K |
|
192
CALL
Wells Fargo
WFC
$266B
| $24.7M | 0.07% |
5,212
-901
| -15% | -$42.1K |
|
193
CALL
Oracle
ORCL
$366B
| $24.7M | 0.07% |
4,329
+1,204
| +39% | +$65.1K |
|
194
CALL
American Airlines Group
AAL
$10.1B
| $24.7M | 0.07% |
7,560
-511
| -6% | -$16.5K |
|
195
PUT
Direxion Daily Technology Bull 3x ETF
TECL
$5.6B
| $24.5M | 0.07% |
34,170
+7,240
| +27% | +$108K |
|
196
CALL
Tilray
TLRY
$523M
| $24.3M | 0.07% |
521
+46
| +10% | +$22K |
|
|
197
State Street Industrial Select Sector SPDR ETF
XLI
$33.1B
| $24.2M | 0.07% |
312,726
+297,790
| +1,994% | +$22.6M |
|
198
CALL
Procter & Gamble
PG
$345B
| $24M | 0.07% |
2,188
-1,396
| -39% | -$149K |
|
199
CALL
Lowe's Companies
LOW
$114B
| $23.9M | 0.07% |
2,372
+673
| +40% | +$71K |
|
200
PUT
Ferrari
RACE
$65.1B
| $23.9M | 0.07% |
1,481
+200
| +16% | +$28.8K |
|
Similar funds
Simplex Trading's Q2 2019 Portfolio in Review
As of Q2 2019, Simplex Trading held 8,406 positions worth $36.6B, up 1.9% from $36B the previous quarter. Its ten largest holdings account for 35% of the portfolio.
Simplex Trading's Q2 2019 filing shows 1,261 new, 2,604 increased, 3,015 reduced and 1,301 closed positions. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 105,724 shares worth $14M. The largest sale was Invesco QQQ Trust, an estimated $123M.
By sector, the portfolio is most concentrated in Technology at 0.5% of assets, up from 0.42% a quarter earlier, followed by Communication Services and Healthcare.
- Simplex Trading's largest Q2 2019 buy was iShares 20+ Year Treasury Bond ETF: 105,724 shares worth $14M.
- Simplex Trading added most to NVIDIA in Q2 2019, an estimated $29.6M increase.
- Simplex Trading's biggest Q2 2019 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $40.6M.
- Simplex Trading fully exited Invesco QQQ Trust in Q2 2019, selling an estimated $123M.
- Simplex Trading's ten largest holdings make up 35% of its $36.6B portfolio in Q2 2019.
- Simplex Trading opened 1,261 new positions and closed 1,301 in Q2 2019.
- Simplex Trading's portfolio value rose 1.9% quarter-over-quarter to $36.6B.
Based on Simplex Trading's 13F filing for Q2 2019, filed 26 Jul 2019.