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 |
Goldman Sachs
GS
|
+$40.4M |
| 2 |
NVIDIA
NVDA
|
+$23.1M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.5M |
| 4 |
Wells Fargo
WFC
|
+$20.8M |
| 5 |
Micron Technology
MU
|
+$20M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Citigroup
C
|
+$21.4M |
| 2 |
Apple
AAPL
|
+$15.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$14.4M |
| 4 |
Eli Lilly
LLY
|
+$10.5M |
| 5 |
iShares Biotechnology ETF
IBB
|
+$8.06M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 9.73% |
| 2 | Communication Services | 9.25% |
| 3 | Consumer Discretionary | 8.76% |
| 4 | Healthcare | 8.53% |
| 5 | Financials | 7.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
351
PUT
lululemon athletica
LULU
$12.9B
| $1.09M | 0.05% |
3,167
+1,926
| +155% | +$127K |
|
352
PUT
Advanced Micro Devices
AMD
$901B
| $1.09M | 0.05% |
9,868
-767
| -7% | -$9.74K |
|
353
Johnson Controls International
JCI
$86.9B
| $1.08M | 0.05% |
+25,553
| New | +$1.08M |
|
|
PPLC
354
CALL
DELISTED
PortfolioPlus S&P 500 ETF
PPLC
| $1.07M | 0.05% |
11,028
-3,994
| -27% | -$120K |
|
355
Cleveland-Cliffs
CLF
$5.39B
| $1.07M | 0.05% |
130,500
+125,504
| +2,512% | +$1.19M |
|
356
Wheaton Precious Metals
WPM
$50.6B
| $1.07M | 0.05% |
+51,302
| New | +$1.07M |
|
357
PUT
SPDR Gold Trust
GLD
$133B
| $1.07M | 0.05% |
5,583
-159
| -3% | -$18.5K |
|
358
ConocoPhillips
COP
$145B
| $1.06M | 0.05% |
21,313
-22,113
| -51% | -$1.07M |
|
359
Yum! Brands
YUM
$40.7B
| $1.06M | 0.05% |
+16,623
| New | +$1.08M |
|
|
MBLY
360
CALL
DELISTED
Mobileye N.V.
MBLY
| $1.06M | 0.05% |
4,231
+2,230
| +111% | +$107K |
|
361
CALL
Visa
V
$672B
| $1.06M | 0.05% |
3,549
-201
| -5% | -$17.3K |
|
362
Simon Property Group
SPG
$73.4B
| $1.05M | 0.05% |
6,110
+3,758
| +160% | +$671K |
|
363
CALL
eBay
EBAY
$49.3B
| $1.05M | 0.05% |
2,191
-2,494
| -53% | -$81.1K |
|
364
Under Armour Class C
UA
$3.02B
| $1.05M | 0.05% |
57,371
+55,480
| +2,934% | +$1.16M |
|
|
EMES
365
DELISTED
Emerge Energy Services LP
EMES
| $1.04M | 0.05% |
75,289
+67,697
| +892% | +$1.09M |
|
366
CALL
Adobe
ADBE
$86.8B
| $1.04M | 0.05% |
938
+203
| +28% | +$23.8K |
|
367
Diamondback Energy
FANG
$57.1B
| $1.04M | 0.05% |
+10,036
| New | +$1.04M |
|
368
PUT
Macy's
M
$6.4B
| $1.04M | 0.04% |
5,569
+2,646
| +91% | +$81.8K |
|
369
PUT
Freeport-McMoran
FCX
$93.4B
| $1.03M | 0.04% |
7,340
+673
| +10% | +$9.67K |
|
|
OCLR
370
DELISTED
Oclaro Inc.
OCLR
| $1.03M | 0.04% |
105,386
+50,897
| +93% | +$478K |
|
|
STRP
371
DELISTED
Straight Path Communications Inc.
STRP
| $1.03M | 0.04% |
28,756
+28,625
| +21,851% | +$992K |
|
372
CALL
Norfolk Southern
NSC
$74.3B
| $1.03M | 0.04% |
1,054
+621
| +143% | +$72.6K |
|
|
KATE
373
CALL
DELISTED
Kate Spade & Company
KATE
| $1.03M | 0.04% |
3,614
+2,363
| +189% | +$49.4K |
|
|
BBL
374
DELISTED
BHP Group Plc American Depositary Shares (Each representing two Ordinary Shares)
BBL
| $1.03M | 0.04% |
32,991
+32,080
| +3,521% | +$1.08M |
|
|
EBIX
375
DELISTED
Ebix Inc
EBIX
| $1.02M | 0.04% |
+16,743
| New | +$995K |
|
Similar funds
Simplex Trading's Q1 2017 Portfolio in Review
As of Q1 2017, Simplex Trading held 7,485 positions worth $2.31B, up 38% from $1.67B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading deployed $551M of net new capital in Q1 2017, opening 1,662 new positions and adding to 2,374 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
By sector, the portfolio is most concentrated in Technology at 9.7% of assets, up from 7.2% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was Citigroup, an estimated $21.4M trimmed.
- Simplex Trading's largest Q1 2017 buy was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
- Simplex Trading added most to Goldman Sachs in Q1 2017, an estimated $40.4M increase.
- Simplex Trading's biggest Q1 2017 reduction was Citigroup, cutting an estimated $21.4M.
- Simplex Trading fully exited Invesco QQQ Trust in Q1 2017, selling an estimated $14.4M.
- Simplex Trading's ten largest holdings make up 18% of its $2.31B portfolio in Q1 2017.
- Simplex Trading opened 1,662 new positions and closed 1,369 in Q1 2017.
- Simplex Trading's portfolio value rose 38% quarter-over-quarter to $2.31B.
Based on Simplex Trading's 13F filing for Q1 2017, filed 21 Apr 2017.