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 | |
|---|---|---|---|---|---|---|
1176
PUT
Vodafone
VOD
$34.9B
| $2.38M | 0.01% |
1,457
-587
| -29% | -$10.1K |
|
1177
CALL
Travelers Companies
TRV
$80.8B
| $2.38M | 0.01% |
159
-79
| -33% | -$11.4K |
|
1178
PUT
Albemarle
ALB
$13.5B
| $2.37M | 0.01% |
337
-352
| -51% | -$26K |
|
1179
CALL
Keurig Dr Pepper
KDP
$40.4B
| $2.37M | 0.01% |
821
-781
| -49% | -$22.2K |
|
1180
CALL
Qiagen
QGEN
$8.53B
| $2.37M | 0.01% |
552
-195
| -26% | -$8.08K |
|
1181
iShares TIPS Bond ETF
TIP
$14.5B
| $2.37M | 0.01% |
20,506
+9,331
| +83% | +$1.06M |
|
|
PFPT
1182
PUT
DELISTED
Proofpoint, Inc.
PFPT
| $2.37M | 0.01% |
197
+75
| +61% | +$8.83K |
|
1183
CALL
Etsy
ETSY
$7.65B
| $2.36M | 0.01% |
385
-33
| -8% | -$2.15K |
|
1184
PUT
Marvell Technology
MRVL
$174B
| $2.36M | 0.01% |
989
-270
| -21% | -$6.31K |
|
|
EBIX
1185
CALL
DELISTED
Ebix Inc
EBIX
| $2.36M | 0.01% |
470
+225
| +92% | +$11.2K |
|
1186
PUT
Bunge Global
BG
$23.6B
| $2.36M | 0.01% |
423
-271
| -39% | -$14.4K |
|
1187
PUT
BioMarin Pharmaceuticals
BMRN
$11.5B
| $2.35M | 0.01% |
275
-154
| -36% | -$13.2K |
|
1188
PVH
PVH
$3.71B
| $2.35M | 0.01% |
24,883
+15,090
| +154% | +$1.67M |
|
|
DOCU
1189
PUT
DocuSign
DOCU
$9.63B
| $2.35M | 0.01% |
472
-52
| -10% | -$2.78K |
|
1190
PUT
Hilton Worldwide
HLT
$74B
| $2.35M | 0.01% |
240
-475
| -66% | -$43.1K |
|
1191
PUT
Clorox
CLX
$11.6B
| $2.34M | 0.01% |
153
+12
| +9% | +$1.83K |
|
1192
Walmart Inc
WMT
$871B
| $2.34M | 0.01% |
+63,600
| New | +$2.19M |
|
|
RP
1193
CALL
DELISTED
RealPage, Inc.
RP
| $2.33M | 0.01% |
396
-274
| -41% | -$16.6K |
|
|
CYBR
1194
DELISTED
CyberArk
CYBR
| $2.32M | 0.01% |
+18,181
| New | +$2.3M |
|
1195
CALL
Cboe Global Markets
CBOE
$29.8B
| $2.32M | 0.01% |
224
+30
| +15% | +$3.11K |
|
1196
CALL
Analog Devices
ADI
$181B
| $2.31M | 0.01% |
205
-258
| -56% | -$27.9K |
|
1197
PUT
Huntington Bancshares
HBAN
$35.1B
| $2.31M | 0.01% |
1,674
+166
| +11% | +$2.23K |
|
1198
PUT
Papa John's
PZZA
$999M
| $2.31M | 0.01% |
517
-407
| -44% | -$20.1K |
|
1199
PUT
TD Synnex
SNX
$19.4B
| $2.31M | 0.01% |
470
-182
| -28% | -$9.04K |
|
1200
Armstrong World Industries
AWI
$6.86B
| $2.3M | 0.01% |
23,663
+23,493
| +13,819% | +$2.1M |
|
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.