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 |
Gilead Sciences
GILD
|
+$17.3M |
| 2 |
Apple
AAPL
|
+$15.2M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$14.9M |
| 4 |
Booking.com
BKNG
|
+$14.7M |
| 5 |
Wells Fargo
WFC
|
+$12.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$38.3M |
| 2 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$30.7M |
| 3 |
LNKD
LinkedIn Corporation
LNKD
|
+$15.2M |
| 4 |
CELG
Celgene Corp
CELG
|
+$12.6M |
| 5 |
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
|
+$10.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 8.39% |
| 2 | Healthcare | 8.28% |
| 3 | Consumer Discretionary | 6.84% |
| 4 | Technology | 6.06% |
| 5 | Financials | 4.39% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
AERI
751
CALL
DELISTED
Aerie Pharmaceuticals
AERI
| $312K | 0.02% |
420
+272
| +184% | +$6K |
|
|
INVN
752
DELISTED
Invensense Inc
INVN
| $312K | 0.02% |
42,141
-20,452
| -33% | -$145K |
|
|
TIVO
753
CALL
DELISTED
Tivo Inc
TIVO
| $311K | 0.02% |
1,518
+493
| +48% | +$9.74K |
|
754
CALL
Domino's
DPZ
$10.6B
| $308K | 0.02% |
263
-73
| -22% | -$10.7K |
|
755
CALL
MGM Resorts International
MGM
$11.6B
| $307K | 0.02% |
2,229
+361
| +19% | +$8.76K |
|
756
CALL
ServiceNow
NOW
$98.4B
| $307K | 0.02% |
1,685
-800
| -32% | -$11.8K |
|
|
WBA
757
PUT
DELISTED
Walgreens Boots Alliance
WBA
| $307K | 0.02% |
1,247
-1,610
| -56% | -$131K |
|
|
BLUE
758
PUT
DELISTED
bluebird bio
BLUE
| $306K | 0.02% |
26
+14
| +117% | +$10.1K |
|
|
HES
759
PUT
DELISTED
Hess
HES
| $306K | 0.02% |
2,155
-1,158
| -35% | -$62K |
|
760
Integra LifeSciences
IART
$1.46B
| $306K | 0.02% |
+7,430
| New | +$311K |
|
761
CALL
McDonald's
MCD
$187B
| $306K | 0.02% |
1,695
-1,559
| -48% | -$185K |
|
762
Direxion Daily Technology Bull 3x ETF
TECL
$5.56B
| $306K | 0.02% |
63,260
+28,200
| +80% | +$126K |
|
763
Lands' End
LE
$370M
| $305K | 0.02% |
+21,052
| New | +$349K |
|
764
CALL
Boeing
BA
$164B
| $304K | 0.02% |
1,574
+89
| +6% | +$11.7K |
|
765
CALL
PNC Financial Services
PNC
$101B
| $303K | 0.02% |
381
+94
| +33% | +$8.07K |
|
766
CALL
Under Armour Class C
UA
$3.02B
| $303K | 0.02% |
1,491
+16
| +1% | +$578 |
|
767
PUT
Visa
V
$672B
| $303K | 0.02% |
2,283
-2,484
| -52% | -$199K |
|
768
PUT
United Parks & Resorts
PRKS
$2.13B
| $303K | 0.02% |
869
+57
| +7% | +$781 |
|
769
Deere & Co
DE
$164B
| $302K | 0.02% |
3,540
-2,555
| -42% | -$209K |
|
770
CALL
F5
FFIV
$22.6B
| $302K | 0.02% |
232
-11
| -5% | -$1.33K |
|
|
AFTY
771
DELISTED
Pacer CSOP FTSE China A50 ETF
AFTY
| $302K | 0.02% |
22,405
+14,457
| +182% | +$192K |
|
|
ASRT
772
PUT
DELISTED
Assertio
ASRT
| $301K | 0.02% |
+20
| New | +$25.1K |
|
773
PUT
Home Depot
HD
$330B
| $300K | 0.02% |
5,106
-1,563
| -23% | -$208K |
|
774
CALL
Molson Coors Class B
TAP
$7.7B
| $300K | 0.02% |
650
+532
| +451% | +$54.1K |
|
|
AKRX
775
DELISTED
Akorn Inc
AKRX
| $300K | 0.02% |
+11,019
| New | +$326K |
|
Similar funds
Simplex Trading's Q3 2016 Portfolio in Review
As of Q3 2016, Simplex Trading held 7,235 positions worth $1.48B, down 1.4% from $1.5B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading withdrew a net $87.1M in Q3 2016, closing 1,479 positions and reducing 1,939 holdings. Its most notable exit was SPDR Gold Trust, an estimated $38.3M position sold in full.
By sector, the portfolio is most concentrated in Communication Services at 8.4% of assets, up from 6.6% a quarter earlier, followed by Healthcare and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Booking.com worth $15.6M.
- Simplex Trading's largest Q3 2016 buy was Booking.com: 264,225 shares worth $15.6M.
- Simplex Trading added most to Gilead Sciences in Q3 2016, an estimated $17.3M increase.
- Simplex Trading's biggest Q3 2016 reduction was LinkedIn Corporation, cutting an estimated $15.2M.
- Simplex Trading fully exited SPDR Gold Trust in Q3 2016, selling an estimated $38.3M.
- Simplex Trading's ten largest holdings make up 18% of its $1.48B portfolio in Q3 2016.
- Simplex Trading opened 1,460 new positions and closed 1,479 in Q3 2016.
- Simplex Trading's portfolio value fell 1.4% quarter-over-quarter to $1.48B.
Based on Simplex Trading's 13F filing for Q3 2016, filed 7 Oct 2016.