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 | |
|---|---|---|---|---|---|---|
3301
PUT
Copa Holdings
CPA
$5.71B
| $234K | ﹤0.01% |
24
-114
| -83% | -$10.1K |
|
|
TMX
3302
PUT
DELISTED
Terminix Global Holdings, Inc.
TMX
| $234K | ﹤0.01% |
45
+44
| +4,400% | +$2.26K |
|
|
TLRA
3303
DELISTED
Telaria, Inc.
TLRA
| $234K | ﹤0.01% |
31,132
+9,983
| +47% | +$74.7K |
|
3304
Conduent
CNDT
$251M
| $233K | ﹤0.01% |
24,332
-27,203
| -53% | -$294K |
|
3305
PUT
Liberty Latin America Class C
LILAK
$1.65B
| $233K | ﹤0.01% |
159
-54
| -25% | -$882 |
|
3306
TD Synnex
SNX
$19.8B
| $233K | ﹤0.01% |
4,738
+500
| +12% | +$24.8K |
|
3307
Tradeweb Markets
TW
$22.2B
| $233K | ﹤0.01% |
+5,339
| New | +$223K |
|
3308
UBS Group
UBS
$171B
| $233K | ﹤0.01% |
+19,677
| New | +$241K |
|
3309
CALL
eHealth
EHTH
$43.2M
| $232K | ﹤0.01% |
27
-175
| -87% | -$11.8K |
|
3310
Levi Strauss
LEVI
$9.8B
| $232K | ﹤0.01% |
11,143
+4,856
| +77% | +$107K |
|
3311
PUT
Maximus
MMS
$3.31B
| $232K | ﹤0.01% |
32
+21
| +191% | +$1.52K |
|
3312
CALL
Titan Machinery
TITN
$458M
| $232K | ﹤0.01% |
113
-5
| -4% | -$84 |
|
3313
CALL
US Foods
USFD
$22.3B
| $232K | ﹤0.01% |
65
-64
| -50% | -$2.33K |
|
|
AUY
3314
PUT
DELISTED
Yamana Gold, Inc.
AUY
| $232K | ﹤0.01% |
923
+258
| +39% | +$568 |
|
|
TGP
3315
CALL
DELISTED
Teekay LNG Partners L.P.
TGP
| $232K | ﹤0.01% |
165
-187
| -53% | -$2.67K |
|
3316
CALL
Gentex
GNTX
$5.12B
| $231K | ﹤0.01% |
94
+86
| +1,075% | +$1.95K |
|
3317
CALL
Spectrum Brands
SPB
$2.08B
| $231K | ﹤0.01% |
43
+40
| +1,333% | +$2.38K |
|
3318
PUT
Winnebago Industries
WGO
$908M
| $231K | ﹤0.01% |
60
-17
| -22% | -$598 |
|
|
CCMP
3319
CALL
DELISTED
CMC Materials, Inc. Common Stock
CCMP
| $231K | ﹤0.01% |
21
+18
| +600% | +$2.04K |
|
|
CISN
3320
DELISTED
Cision Ltd. Ordinary Share
CISN
| $231K | ﹤0.01% |
19,728
+14,925
| +311% | +$177K |
|
3321
CALL
Huntington Bancshares
HBAN
$35B
| $230K | ﹤0.01% |
167
+116
| +227% | +$1.56K |
|
3322
CALL
Middleby
MIDD
$6.11B
| $230K | ﹤0.01% |
17
-174
| -91% | -$23.4K |
|
3323
PUT
Tidewater
TDW
$3.71B
| $230K | ﹤0.01% |
98
-17
| -15% | -$391 |
|
3324
CALL
Bruker
BRKR
$9.58B
| $229K | ﹤0.01% |
46
+27
| +142% | +$1.14K |
|
3325
Grand Canyon Education
LOPE
$3.99B
| $229K | ﹤0.01% |
+1,958
| New | +$234K |
|
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.